410 Area CodeBaltimore, MD
Area code 410 covers Baltimore and nearby communities in Maryland, in the Eastern Time (ET) zone, home to about 3,212,271 people across 208 cities. It overlays 443 and 667, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Baltimore
- State
- Maryland (MD)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 443, 667
Overview of the 410 Area Code
What is the 410 area code?
The 410 area code serves Baltimore, Maryland, alongside other established area codes. When you see a 410 number, it indicates a local number within this geographic area.
Why was area code 410 created?
Area code 410 went into service on October 6, 1991, taking over territory that had been part of area code 301. The overlay codes 443 and 667 now serve the same area.
Geographic Coverage of the 410 Area Code
The 410 area code serves Baltimore and surrounding areas in Maryland. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 443 and 667. This area code covers several key cities, including:
- Baltimore
- Columbia
- Glen Burnie
- Ellicott City
- Dundalk
- Towson
Got a call from a 410 number? It came from Baltimore, MD. Since 410 overlays with 443 and 667, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, Baltimore accounts for about 23.0%; the rest is split across 207 smaller cities.
Baltimore Area Codes Overview
Baltimore is served by multiple area codes, reflecting its telecommunications needs. The 410 area code operates alongside 443, 667. Here are the area codes serving this region:
The introduction of the 410 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 410 cover?
| City | State | Population | Population in 410 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Baltimore | MD | 568,271 | 568,271 | 23.0% | 100.0% |
| Columbia | MD | 99,615 | 88,218 | 4.0% | 88.6% |
| Glen Burnie | MD | 67,639 | 67,639 | 2.7% | 100.0% |
| Ellicott City | MD | 65,834 | 65,834 | 2.7% | 100.0% |
| Dundalk | MD | 63,597 | 63,597 | 2.6% | 100.0% |
| Towson | MD | 55,197 | 55,197 | 2.2% | 100.0% |
| Bel Air South | MD | 47,709 | 47,709 | 1.9% | 100.0% |
| Severn | MD | 44,231 | 44,231 | 1.8% | 100.0% |
| Catonsville | MD | 41,567 | 41,567 | 1.7% | 100.0% |
| Annapolis | MD | 40,689 | 40,689 | 1.7% | 100.0% |
| Essex | MD | 39,262 | 39,262 | 1.6% | 100.0% |
| Woodlawn | MD | 37,879 | 37,879 | 1.5% | 100.0% |
| Severna Park | MD | 37,634 | 37,634 | 1.5% | 100.0% |
| Odenton | MD | 37,132 | 37,132 | 1.5% | 100.0% |
| Salisbury | MD | 33,616 | 33,616 | 1.4% | 100.0% |
| Randallstown | MD | 32,430 | 32,430 | 1.3% | 100.0% |
| Pikesville | MD | 30,764 | 30,764 | 1.3% | 100.0% |
| Parkville | MD | 30,734 | 30,734 | 1.3% | 100.0% |
| Owings Mills | MD | 30,622 | 30,622 | 1.2% | 100.0% |
| Bel Air North | MD | 30,568 | 30,568 | 1.2% | 100.0% |
| Eldersburg | MD | 30,531 | 30,531 | 1.2% | 100.0% |
| Carney | MD | 29,941 | 29,941 | 1.2% | 100.0% |
| Milford Mill | MD | 29,042 | 29,042 | 1.2% | 100.0% |
| Perry Hall | MD | 28,474 | 28,474 | 1.2% | 100.0% |
| Crofton | MD | 27,348 | 27,348 | 1.1% | 100.0% |
| Reisterstown | MD | 25,968 | 25,968 | 1.1% | 100.0% |
| Edgewood | MD | 25,562 | 25,562 | 1.0% | 100.0% |
| Lochearn | MD | 25,333 | 25,333 | 1.0% | 100.0% |
| Middle River | MD | 25,191 | 25,191 | 1.0% | 100.0% |
| Pasadena | MD | 24,287 | 24,287 | 1.0% | 100.0% |
| Ilchester | MD | 23,476 | 23,476 | 1.0% | 100.0% |
| Arnold | MD | 23,106 | 19,787 | 0.9% | 85.6% |
| Cockeysville | MD | 20,776 | 20,776 | 0.9% | 100.0% |
| Westminster | MD | 20,662 | 20,662 | 0.8% | 100.0% |
| Arbutus | MD | 20,483 | 20,483 | 0.8% | 100.0% |
| Lake Shore | MD | 19,477 | 19,477 | 0.8% | 100.0% |
| Rosedale | MD | 19,257 | 19,257 | 0.8% | 100.0% |
| Aberdeen | MD | 18,451 | 18,451 | 0.8% | 100.0% |
| Easton | MD | 17,381 | 17,381 | 0.7% | 100.0% |
| Ferndale | MD | 16,746 | 16,746 | 0.7% | 100.0% |
| Elkton | MD | 15,977 | 15,977 | 0.7% | 100.0% |
| Parole | MD | 15,922 | 15,922 | 0.7% | 100.0% |
| Elkridge | MD | 15,593 | 15,593 | 0.6% | 100.0% |
| Havre de Grace | MD | 15,222 | 15,222 | 0.6% | 100.0% |
| Rossville | MD | 15,147 | 15,147 | 0.6% | 100.0% |
| Brooklyn Park | MD | 14,373 | 14,373 | 0.6% | 100.0% |
| Cambridge | MD | 13,262 | 13,262 | 0.5% | 100.0% |
| Riviera Beach | MD | 12,677 | 12,677 | 0.5% | 100.0% |
| Joppatowne | MD | 12,616 | 12,616 | 0.5% | 100.0% |
| Overlea | MD | 12,275 | 12,275 | 0.5% | 100.0% |
| Ocean Pines | MD | 11,710 | 11,710 | 0.5% | 100.0% |
| Mays Chapel | MD | 11,420 | 11,420 | 0.5% | 100.0% |
| Annapolis Neck | MD | 10,950 | 10,950 | 0.5% | 100.0% |
| Chesapeake Ranch Estates | MD | 10,519 | 10,519 | 0.4% | 100.0% |
| Bel Air | MD | 10,395 | 10,395 | 0.4% | 100.0% |
| Linthicum | MD | 10,324 | 10,324 | 0.4% | 100.0% |
| Timonium | MD | 9,925 | 9,925 | 0.4% | 100.0% |
| White Marsh | MD | 9,513 | 9,513 | 0.4% | 100.0% |
| Fort Meade | MD | 9,327 | 9,327 | 0.4% | 100.0% |
| Edgewater | MD | 9,023 | 9,023 | 0.4% | 100.0% |
| Fallston | MD | 8,958 | 8,958 | 0.4% | 100.0% |
| Garrison | MD | 8,823 | 8,823 | 0.4% | 100.0% |
| Cape St. Claire | MD | 8,747 | 8,747 | 0.4% | 100.0% |
| Edgemere | MD | 8,669 | 8,669 | 0.4% | 100.0% |
| Lansdowne | MD | 8,409 | 8,409 | 0.3% | 100.0% |
| Mayo | MD | 8,298 | 8,298 | 0.3% | 100.0% |
| Taneytown | MD | 8,293 | 8,293 | 0.3% | 100.0% |
| Jessup | MD | 7,137 | 7,137 | 0.3% | 100.0% |
| Baltimore Highlands | MD | 7,019 | 7,019 | 0.3% | 100.0% |
| Ocean City | MD | 6,884 | 1,836 | 0.3% | 26.7% |
| Stevensville | MD | 6,803 | 6,803 | 0.3% | 100.0% |
| Bowleys Quarters | MD | 6,755 | 6,755 | 0.3% | 100.0% |
| Lutherville | MD | 6,504 | 6,504 | 0.3% | 100.0% |
| Chesapeake Beach | MD | 6,504 | 6,504 | 0.3% | 100.0% |
| Riverside | MD | 6,425 | 6,425 | 0.3% | 100.0% |
| Hampstead | MD | 6,288 | 6,288 | 0.3% | 100.0% |
| Fruitland | MD | 5,973 | 5,973 | 0.3% | 100.0% |
| Shady Side | MD | 5,803 | 5,803 | 0.2% | 100.0% |
| Chestertown | MD | 5,702 | 5,702 | 0.2% | 100.0% |
| Manchester | MD | 5,440 | 5,440 | 0.2% | 100.0% |
| Berlin | MD | 5,349 | 5,349 | 0.2% | 100.0% |
| Hampton | MD | 5,052 | 5,052 | 0.2% | 100.0% |
| Denton | MD | 5,049 | 5,049 | 0.2% | 100.0% |
| Deale | MD | 4,945 | 4,945 | 0.2% | 100.0% |
| Naval Academy | MD | 4,802 | 4,802 | 0.2% | 100.0% |
| Centreville | MD | 4,771 | 4,771 | 0.2% | 100.0% |
| Delmar | MD | 4,748 | 4,748 | 0.2% | 100.0% |
| Sykesville | MD | 4,622 | 4,622 | 0.2% | 100.0% |
| Perryville | MD | 4,510 | 4,510 | 0.2% | 100.0% |
| Pocomoke City | MD | 4,426 | 4,426 | 0.2% | 100.0% |
| West Ocean City | MD | 4,375 | 4,375 | 0.2% | 100.0% |
| Kingsville | MD | 4,318 | 4,318 | 0.2% | 100.0% |
| North East | MD | 4,191 | 4,191 | 0.2% | 100.0% |
| Chester | MD | 4,167 | 0 | 0.2% | 0.0% |
| Riva | MD | 4,076 | 4,076 | 0.2% | 100.0% |
| Princess Anne | MD | 3,667 | 3,667 | 0.2% | 100.0% |
| Grasonville | MD | 3,425 | 3,425 | 0.1% | 100.0% |
| Pleasant Hills | MD | 3,379 | 3,379 | 0.1% | 100.0% |
| Huntingtown | MD | 3,311 | 3,311 | 0.1% | 100.0% |
| Jarrettsville | MD | 2,916 | 2,916 | 0.1% | 100.0% |
| Federalsburg | MD | 2,871 | 2,871 | 0.1% | 100.0% |
| Gambrills | MD | 2,800 | 2,800 | 0.1% | 100.0% |
| Rising Sun | MD | 2,777 | 2,777 | 0.1% | 100.0% |
| Drum Point | MD | 2,731 | 2,731 | 0.1% | 100.0% |
| Herald Harbor | MD | 2,603 | 2,603 | 0.1% | 100.0% |
| Prince Frederick | MD | 2,538 | 2,538 | 0.1% | 100.0% |
| Crisfield | MD | 2,531 | 2,531 | 0.1% | 100.0% |
| Solomons | MD | 2,368 | 2,368 | 0.1% | 100.0% |
| Perryman | MD | 2,342 | 2,342 | 0.1% | 100.0% |
| Snow Hill | MD | 2,243 | 2,243 | 0.1% | 100.0% |
| North Beach | MD | 2,178 | 2,178 | 0.1% | 100.0% |
| Owings | MD | 2,149 | 2,149 | 0.1% | 100.0% |
| Aberdeen Proving Ground | MD | 2,093 | 2,093 | 0.1% | 100.0% |
| Hurlock | MD | 2,093 | 2,093 | 0.1% | 100.0% |
| Greensboro | MD | 1,969 | 1,969 | 0.1% | 100.0% |
| Arden on the Severn | MD | 1,953 | 1,953 | 0.1% | 100.0% |
| Lusby | MD | 1,835 | 1,835 | 0.1% | 100.0% |
| Long Beach | MD | 1,821 | 1,821 | 0.1% | 100.0% |
| New Windsor | MD | 1,758 | 1,758 | 0.1% | 100.0% |
| Crownsville | MD | 1,757 | 1,757 | 0.1% | 100.0% |
| Kingstown | MD | 1,733 | 1,733 | 0.1% | 100.0% |
| Pittsville | MD | 1,660 | 1,660 | 0.1% | 100.0% |
| Ridgely | MD | 1,646 | 1,646 | 0.1% | 100.0% |
| Charlestown | MD | 1,538 | 1,538 | 0.1% | 100.0% |
| Trappe | MD | 1,472 | 1,472 | 0.1% | 100.0% |
| Algonquin | MD | 1,241 | 1,241 | 0.1% | 100.0% |
| Rock Hall | MD | 1,200 | 1,200 | 0.1% | 100.0% |
| Hebron | MD | 1,114 | 1,114 | 0.1% | 100.0% |
| St. Michaels | MD | 1,073 | 1,073 | 0.1% | 100.0% |
| Willards | MD | 1,005 | 1,005 | 0.0% | 100.0% |
| Union Bridge | MD | 946 | 946 | 0.0% | 100.0% |
| Church Hill | MD | 831 | 831 | 0.0% | 100.0% |
| Eden | MD | 823 | 823 | 0.0% | 100.0% |
| Calvert Beach | MD | 808 | 808 | 0.0% | 100.0% |
| Tilghman Island | MD | 784 | 784 | 0.0% | 100.0% |
| Mount Vernon | MD | 779 | 779 | 0.0% | 100.0% |
| Chesapeake City | MD | 745 | 745 | 0.0% | 100.0% |
| St. Leonard | MD | 742 | 742 | 0.0% | 100.0% |
| Queenstown | MD | 737 | 737 | 0.0% | 100.0% |
| Sharptown | MD | 711 | 711 | 0.0% | 100.0% |
| Pylesville | MD | 693 | 693 | 0.0% | 100.0% |
| Cecilton | MD | 688 | 688 | 0.0% | 100.0% |
| Preston | MD | 688 | 688 | 0.0% | 100.0% |
| Galesville | MD | 684 | 684 | 0.0% | 100.0% |
| Port Deposit | MD | 625 | 625 | 0.0% | 100.0% |
| Oxford | MD | 601 | 601 | 0.0% | 100.0% |
| Kent Narrows | MD | 567 | 567 | 0.0% | 100.0% |
| Cordova | MD | 562 | 562 | 0.0% | 100.0% |
| Millington | MD | 541 | 541 | 0.0% | 100.0% |
| Galena | MD | 538 | 538 | 0.0% | 100.0% |
| Bishopville | MD | 531 | 531 | 0.0% | 100.0% |
| Sudlersville | MD | 516 | 516 | 0.0% | 100.0% |
| Butlertown | MD | 505 | 505 | 0.0% | 100.0% |
| Fairlee | MD | 490 | 490 | 0.0% | 100.0% |
| Deal Island | MD | 471 | 471 | 0.0% | 100.0% |
| Secretary | MD | 469 | 469 | 0.0% | 100.0% |
| Fairmount | MD | 457 | 457 | 0.0% | 100.0% |
| West Pocomoke | MD | 454 | 454 | 0.0% | 100.0% |
| Friendship | MD | 447 | 447 | 0.0% | 100.0% |
| Darlington | MD | 409 | 409 | 0.0% | 100.0% |
| East New Market | MD | 407 | 407 | 0.0% | 100.0% |
| Broomes Island | MD | 405 | 0 | 0.0% | 0.0% |
| Mardela Springs | MD | 354 | 354 | 0.0% | 100.0% |
| Chance | MD | 353 | 353 | 0.0% | 100.0% |
| Parsonsburg | MD | 339 | 339 | 0.0% | 100.0% |
| Newark | MD | 336 | 336 | 0.0% | 100.0% |
| Tolchester | MD | 329 | 329 | 0.0% | 100.0% |
| Betterton | MD | 283 | 283 | 0.0% | 100.0% |
| Smith Island | MD | 276 | 276 | 0.0% | 100.0% |
| Vienna | MD | 275 | 275 | 0.0% | 100.0% |
| Worton | MD | 249 | 249 | 0.0% | 100.0% |
| Tyaskin | MD | 236 | 236 | 0.0% | 100.0% |
| Nanticoke | MD | 225 | 225 | 0.0% | 100.0% |
| Goldsboro | MD | 216 | 216 | 0.0% | 100.0% |
| Allen | MD | 210 | 210 | 0.0% | 100.0% |
| Madison | MD | 204 | 204 | 0.0% | 100.0% |
| Bivalve | MD | 201 | 201 | 0.0% | 100.0% |
| Kennedyville | MD | 199 | 199 | 0.0% | 100.0% |
| Queen Anne | MD | 192 | 192 | 0.0% | 100.0% |
| Powellville | MD | 189 | 189 | 0.0% | 100.0% |
| Jesterville | MD | 188 | 188 | 0.0% | 100.0% |
| Barclay | MD | 181 | 181 | 0.0% | 100.0% |
| Marydel | MD | 178 | 178 | 0.0% | 100.0% |
| Taylors Island | MD | 173 | 173 | 0.0% | 100.0% |
| Edesville | MD | 169 | 169 | 0.0% | 100.0% |
| Dames Quarter | MD | 167 | 167 | 0.0% | 100.0% |
| Fishing Creek | MD | 163 | 163 | 0.0% | 100.0% |
| Henderson | MD | 161 | 161 | 0.0% | 100.0% |
| Williston | MD | 155 | 155 | 0.0% | 100.0% |
| Whaleyville | MD | 149 | 149 | 0.0% | 100.0% |
| Girdletree | MD | 149 | 149 | 0.0% | 100.0% |
| Georgetown | MD | 143 | 143 | 0.0% | 100.0% |
| Hillsboro | MD | 135 | 135 | 0.0% | 100.0% |
| Quantico | MD | 133 | 133 | 0.0% | 100.0% |
| Choptank | MD | 129 | 129 | 0.0% | 100.0% |
| Galestown | MD | 115 | 115 | 0.0% | 100.0% |
| Templeville | MD | 114 | 114 | 0.0% | 100.0% |
| Highland Beach | MD | 107 | 107 | 0.0% | 100.0% |
| Church Creek | MD | 105 | 105 | 0.0% | 100.0% |
| Nanticoke Acres | MD | 103 | 103 | 0.0% | 100.0% |
| Frenchtown-Rumbly | MD | 100 | 100 | 0.0% | 100.0% |
| Stockton | MD | 92 | 92 | 0.0% | 100.0% |
| Elliott | MD | 52 | 52 | 0.0% | 100.0% |
| West Denton | MD | 52 | 52 | 0.0% | 100.0% |
| Eldorado | MD | 46 | 46 | 0.0% | 100.0% |
| Brookview | MD | 46 | 46 | 0.0% | 100.0% |
| Whitehaven | MD | 43 | 43 | 0.0% | 100.0% |
| Waterview | MD | 40 | 40 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 410 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
What counties does area code 410 cover?
3,212,271 residents across 17 counties, counted inside the 410 boundary — a county split between codes contributes only its part.
| County | State | Population in 410 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Baltimore County | MD | 854,535 | 27% | 100% |
| Baltimore city | MD | 585,708 | 18% | 100% |
| Anne Arundel County | MD | 565,600 | 18% | 96% |
| Harford County | MD | 260,924 | 8% | 100% |
| Howard County | MD | 242,403 | 8% | 73% |
| Carroll County | MD | 162,109 | 5% | 94% |
| Cecil County | MD | 103,725 | 3% | 100% |
| Wicomico County | MD | 103,588 | 3% | 100% |
| Calvert County | MD | 92,783 | 3% | 100% |
| Worcester County | MD | 47,387 | 1% | 90% |
| Queen Anne's County | MD | 45,164 | 1% | 91% |
| Talbot County | MD | 35,680 | 1% | 95% |
| Caroline County | MD | 33,293 | 1% | 100% |
| Dorchester County | MD | 32,531 | 1% | 100% |
| Somerset County | MD | 24,620 | 1% | 100% |
| Kent County | MD | 19,198 | 1% | 100% |
| Frederick County | MD | 3,023 | 0% | 1% |
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 410 been reported for unwanted calls?
Yes – 1,390 unwanted-call complaints were reported to the FTC for numbers showing a 410 area code (May 29 – Aug 14, 2026).
- 65% robocalls
- ↓ 12% vs prior period
Most-reported subjects
- Other48%666
- Dropped call or no message24%337
- Calls pretending to be government, businesses, or family and friends8%109
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-08-17.
Which prefixes and exchanges belong to area code 410?
78% assigned to a telco
- 80% Landline
- 20% Wireless
- 0% Unknown
of 782 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (410)200- | Landline | Mcimetro Access Transmission Services |
| (410)202- | Wireless | Verizon Wireless |
| (410)203- | Landline | Verizon Maryland |
| (410)204- | Landline | Verizon Maryland |
| (410)205- | Wireless | New Cingular Wireless Pcs |
| (410)206- | Wireless | New Cingular Wireless Pcs |
| (410)207- | Wireless | Verizon Wireless |
| (410)208- | Landline | Verizon Maryland |
| (410)209- | Landline | Verizon Maryland |
| (410)210- | Wireless | Verizon Wireless |
| (410)212- | Wireless | Sprint Spectrum |
| (410)213- | Landline | Verizon Maryland |
| (410)214- | Landline | Core Communications |
| (410)215- | Wireless | Verizon Wireless |
| (410)216- | Landline | Verizon Maryland |
| (410)217- | Landline | Verizon Maryland |
| (410)218- | Wireless | Verizon Wireless |
| (410)219- | Landline | Verizon Maryland |
| (410)220- | Wireless | Sprint Spectrum |
| (410)221- | Landline | Verizon Maryland |
| (410)222- | Landline | Verizon Maryland |
| (410)223- | Landline | Verizon Maryland |
| (410)224- | Landline | Verizon Maryland |
| (410)225- | Landline | Verizon Maryland |
| (410)226- | Landline | Verizon Maryland |
| (410)227- | Wireless | New Cingular Wireless Pcs |
| (410)228- | Landline | Verizon Maryland |
| (410)229- | Landline | Verizon Maryland |
| (410)230- | Landline | Verizon Maryland |
| (410)231- | Wireless | New Cingular Wireless Pcs |
| (410)232- | Wireless | Usa Mobility Wireless |
| (410)233- | Landline | Verizon Maryland |
| (410)234- | Landline | Verizon Maryland |
| (410)235- | Landline | Verizon Maryland |
| (410)236- | Wireless | New Cingular Wireless Pcs |
| (410)237- | Landline | Verizon Maryland |
| (410)238- | Landline | Verizon Maryland |
| (410)239- | Landline | Verizon Maryland |
| (410)240- | Wireless | Sprint Spectrum |
| (410)241- | Wireless | Verizon Wireless |
| (410)242- | Landline | Verizon Maryland |
| (410)243- | Landline | Verizon Maryland |
| (410)244- | Landline | Verizon Maryland |
| (410)245- | Wireless | New Cingular Wireless Pcs |
| (410)246- | Landline | Mcimetro Access Transmission Services |
| (410)247- | Landline | Verizon Maryland |
| (410)248- | Landline | Verizon Maryland |
| (410)249- | Landline | Verizon Maryland |
| (410)250- | Landline | Verizon Maryland |
| (410)251- | Wireless | Verizon Wireless |
| (410)252- | Landline | Verizon Maryland |
| (410)253- | Wireless | New Cingular Wireless Pcs |
| (410)254- | Landline | Verizon Maryland |
| (410)255- | Landline | Verizon Maryland |
| (410)256- | Landline | Verizon Maryland |
| (410)257- | Landline | Verizon Maryland |
| (410)258- | Wireless | Sprint Spectrum |
| (410)259- | Wireless | Verizon Wireless |
| (410)260- | Landline | Verizon Maryland |
| (410)261- | Landline | Verizon Maryland |
| (410)262- | Wireless | Sprint Spectrum |
| (410)263- | Landline | Verizon Maryland |
| (410)264- | Landline | Verizon Maryland |
| (410)265- | Landline | Verizon Maryland |
| (410)266- | Landline | Verizon Maryland |
| (410)267- | Landline | Verizon Maryland |
| (410)268- | Landline | Verizon Maryland |
| (410)269- | Landline | Verizon Maryland |
| (410)270- | Landline | Redi-Call Communications Co. |
| (410)271- | Wireless | Verizon Wireless |
| (410)272- | Landline | Verizon Maryland |
| (410)273- | Landline | Verizon Maryland |
| (410)274- | Wireless | Verizon Wireless |
| (410)275- | Landline | Verizon Maryland |
| (410)276- | Landline | Verizon Maryland |
| (410)277- | Landline | Verizon Maryland |
| (410)278- | Landline | Verizon Maryland |
| (410)279- | Wireless | Verizon Wireless |
| (410)280- | Landline | Verizon Maryland |
| (410)281- | Landline | Verizon Maryland |
| (410)282- | Landline | Verizon Maryland |
| (410)283- | Wireless | Usa Mobility Wireless |
| (410)284- | Landline | Verizon Maryland |
| (410)285- | Landline | Verizon Maryland |
| (410)286- | Landline | Verizon Maryland |
| (410)287- | Landline | Verizon Maryland |
| (410)288- | Landline | Verizon Maryland |
| (410)289- | Landline | Verizon Maryland |
| (410)290- | Landline | Verizon Maryland |
| (410)291- | Landline | Verizon Maryland |
| (410)292- | Wireless | New Cingular Wireless Pcs |
| (410)293- | Landline | Paetec Communications |
| (410)294- | Wireless | New Cingular Wireless Pcs |
| (410)295- | Landline | Verizon Maryland |
| (410)296- | Landline | Verizon Maryland |
| (410)297- | Landline | Verizon Maryland |
| (410)298- | Landline | Verizon Maryland |
| (410)299- | Wireless | Verizon Wireless |
| (410)300- | Wireless | Sprint Spectrum |
| (410)301- | Wireless | Sprint Spectrum |
| (410)302- | Wireless | New Cingular Wireless Pcs |
| (410)303- | Wireless | Verizon Wireless |
| (410)304- | Landline | Idt America |
| (410)305- | Landline | Verizon Maryland |
| (410)306- | Landline | Verizon Maryland |
| (410)307- | Landline | Verizon Maryland |
| (410)308- | Landline | Verizon Maryland |
| (410)309- | Landline | Verizon Maryland |
| (410)310- | Wireless | Verizon Wireless |
| (410)312- | Landline | Verizon Maryland |
| (410)313- | Landline | Verizon Maryland |
| (410)314- | Landline | Mcimetro Access Transmission Services |
| (410)315- | Landline | Verizon Maryland |
| (410)316- | Landline | Verizon Maryland |
| (410)317- | Landline | Mcimetro Access Transmission Services |
| (410)318- | Landline | Verizon Maryland |
| (410)319- | Landline | Verizon Maryland |
| (410)320- | Wireless | Sprint Spectrum |
| (410)321- | Landline | Verizon Maryland |
| (410)322- | Wireless | New Cingular Wireless Pcs |
| (410)323- | Landline | Verizon Maryland |
| (410)324- | Landline | Verizon Maryland |
| (410)325- | Landline | Verizon Maryland |
| (410)326- | Landline | Verizon Maryland |
| (410)327- | Landline | Verizon Maryland |
| (410)328- | Landline | Verizon Maryland |
| (410)329- | Landline | Verizon Maryland |
| (410)330- | Wireless | New Cingular Wireless Pcs |
| (410)331- | Wireless | Usa Mobility Wireless |
| (410)332- | Landline | Verizon Maryland |
| (410)333- | Landline | Verizon Maryland |
| (410)334- | Landline | Verizon Maryland |
| (410)335- | Landline | Verizon Maryland |
| (410)336- | Wireless | New Cingular Wireless Pcs |
| (410)337- | Landline | Verizon Maryland |
| (410)338- | Landline | Verizon Maryland |
| (410)339- | Landline | Verizon Maryland |
| (410)340- | Wireless | New Cingular Wireless Pcs |
| (410)341- | Landline | Verizon Maryland |
| (410)342- | Landline | Verizon Maryland |
| (410)343- | Landline | Verizon Maryland |
| (410)344- | Landline | Verizon Maryland |
| (410)345- | Landline | Verizon Maryland |
| (410)346- | Landline | Verizon Maryland |
| (410)347- | Landline | Verizon Maryland |
| (410)348- | Landline | Verizon Maryland |
| (410)349- | Landline | Verizon Maryland |
| (410)350- | Landline | Verizon Maryland |
| (410)351- | Wireless | Usa Mobility Wireless |
| (410)352- | Landline | Verizon Maryland |
| (410)353- | Wireless | Verizon Wireless |
| (410)354- | Landline | Verizon Maryland |
| (410)355- | Landline | Verizon Maryland |
| (410)356- | Landline | Verizon Maryland |
| (410)357- | Landline | Verizon Maryland |
| (410)358- | Landline | Verizon Maryland |
| (410)359- | Landline | Verizon Maryland |
| (410)360- | Landline | Verizon Maryland |
| (410)361- | Landline | Verizon Maryland |
| (410)362- | Landline | Verizon Maryland |
| (410)363- | Landline | Verizon Maryland |
| (410)364- | Landline | Verizon Maryland |
| (410)365- | Wireless | Sprint Spectrum |
| (410)366- | Landline | Verizon Maryland |
| (410)367- | Landline | Verizon Maryland |
| (410)368- | Landline | Verizon Maryland |
| (410)369- | Landline | Level 3 Telecom Of Maryland |
| (410)370- | Wireless | New Cingular Wireless Pcs |
| (410)371- | Wireless | Verizon Wireless |
| (410)372- | Landline | Verizon Maryland |
| (410)373- | Wireless | Usa Mobility Wireless |
| (410)374- | Landline | Verizon Maryland |
| (410)375- | Wireless | Verizon Wireless |
| (410)376- | Landline | Verizon Maryland |
| (410)377- | Landline | Verizon Maryland |
| (410)378- | Landline | Verizon Maryland |
| (410)379- | Landline | Verizon Maryland |
| (410)380- | Landline | Redi-Call Communications Co. |
| (410)381- | Landline | Verizon Maryland |
| (410)382- | Wireless | Verizon Wireless |
| (410)383- | Landline | Verizon Maryland |
| (410)384- | Landline | Verizon Maryland |
| (410)385- | Landline | Verizon Maryland |
| (410)386- | Landline | Verizon Maryland |
| (410)387- | Landline | Broadview Networks |
| (410)388- | Landline | Verizon Maryland |
| (410)389- | Wireless | Usa Mobility Wireless |
| (410)390- | Landline | Teleport Communications America |
| (410)391- | Landline | Verizon Maryland |
| (410)392- | Landline | Verizon Maryland |
| (410)393- | Landline | Verizon Maryland |
| (410)394- | Landline | Verizon Maryland |
| (410)395- | Landline | Verizon Maryland |
| (410)396- | Landline | Verizon Maryland |
| (410)397- | Landline | Verizon Maryland |
| (410)398- | Landline | Verizon Maryland |
| (410)399- | Landline | Verizon Maryland |
| (410)400- | Landline | Cavalier Telephone Mid-Atlantic |
| (410)401- | Landline | Mcimetro Access Transmission Services |
| (410)402- | Landline | Mcimetro Access Transmission Services |
| (410)403- | Landline | Mcimetro Access Transmission Services |
| (410)404- | Wireless | Verizon Wireless |
| (410)405- | Landline | Verizon Maryland |
| (410)406- | Landline | Mcimetro Access Transmission Services |
| (410)407- | Landline | Verizon Maryland |
| (410)408- | Wireless | Usa Mobility Wireless |
| (410)409- | Wireless | Verizon Wireless |
| (410)412- | Landline | Mcimetro Access Transmission Services |
| (410)413- | Landline | Mcimetro Access Transmission Services |
| (410)414- | Landline | Verizon Maryland |
| (410)415- | Landline | Verizon Maryland |
| (410)416- | Landline | American Messaging Services |
| (410)417- | Landline | Verizon Maryland |
| (410)418- | Landline | Verizon Maryland |
| (410)419- | Wireless | Sprint Spectrum |
| (410)420- | Landline | Verizon Maryland |
| (410)421- | Landline | Verizon Maryland |
| (410)422- | Wireless | New Cingular Wireless Pcs |
| (410)423- | Landline | Teleport Communications America |
| (410)424- | Landline | Verizon Maryland |
| (410)425- | Landline | Verizon Maryland |
| (410)426- | Landline | Verizon Maryland |
| (410)427- | Landline | Teleport Communications America |
| (410)428- | Wireless | New Cingular Wireless Pcs |
| (410)429- | Landline | Verizon Maryland |
| (410)430- | Wireless | Verizon Wireless |
| (410)431- | Landline | Verizon Maryland |
| (410)432- | Landline | Verizon Maryland |
| (410)433- | Landline | Verizon Maryland |
| (410)434- | Wireless | Usa Mobility Wireless |
| (410)435- | Landline | Verizon Maryland |
| (410)436- | Landline | Verizon Maryland |
| (410)437- | Landline | Verizon Maryland |
| (410)438- | Landline | Verizon Maryland |
| (410)439- | Landline | Verizon Maryland |
| (410)440- | Wireless | New Cingular Wireless Pcs |
| (410)441- | Wireless | New Cingular Wireless Pcs |
| (410)442- | Landline | Verizon Maryland |
| (410)443- | Landline | Level 3 Communications |
| (410)444- | Landline | Verizon Maryland |
| (410)445- | Wireless | Usa Mobility Wireless |
| (410)446- | Wireless | New Cingular Wireless Pcs |
| (410)447- | Wireless | Usa Mobility Wireless |
| (410)448- | Landline | Verizon Maryland |
| (410)449- | Landline | Bandwidth.Com Clec |
| (410)450- | Landline | Verizon Maryland |
| (410)451- | Landline | Verizon Maryland |
| (410)452- | Landline | Verizon Maryland |
| (410)453- | Landline | Verizon Maryland |
| (410)454- | Landline | Mcimetro Access Transmission Services |
| (410)455- | Landline | Verizon Maryland |
| (410)456- | Wireless | Verizon Wireless |
| (410)457- | Landline | Verizon Maryland |
| (410)458- | Wireless | Verizon Wireless |
| (410)459- | Wireless | Verizon Wireless |
| (410)460- | Wireless | Usa Mobility Wireless |
| (410)461- | Landline | Verizon Maryland |
| (410)462- | Landline | Verizon Maryland |
| (410)463- | Wireless | Verizon Wireless |
| (410)464- | Landline | Verizon Maryland |
| (410)465- | Landline | Verizon Maryland |
| (410)466- | Landline | Verizon Maryland |
| (410)467- | Landline | Verizon Maryland |
| (410)468- | Landline | Verizon Maryland |
| (410)469- | Landline | Verizon Maryland |
| (410)470- | Landline | Verizon Maryland |
| (410)471- | Landline | Verizon Maryland |
| (410)472- | Landline | Verizon Maryland |
| (410)473- | Wireless | Usa Mobility Wireless |
| (410)474- | Wireless | Verizon Wireless |
| (410)475- | Wireless | Usa Mobility Wireless |
| (410)476- | Landline | Verizon Maryland |
| (410)477- | Landline | Verizon Maryland |
| (410)478- | Wireless | Usa Mobility Wireless |
| (410)479- | Landline | Verizon Maryland |
| (410)480- | Landline | Verizon Maryland |
| (410)482- | Landline | Verizon Maryland |
| (410)483- | Landline | Verizon Maryland |
| (410)484- | Landline | Verizon Maryland |
| (410)485- | Landline | Verizon Maryland |
| (410)486- | Landline | Verizon Maryland |
| (410)487- | Landline | Mcimetro Access Transmission Services |
| (410)488- | Landline | Verizon Maryland |
| (410)489- | Landline | Verizon Maryland |
| (410)490- | Wireless | Verizon Wireless |
| (410)491- | Wireless | New Cingular Wireless Pcs |
| (410)492- | Wireless | Usa Mobility Wireless |
| (410)493- | Wireless | Sprint Spectrum |
| (410)494- | Landline | Verizon Maryland |
| (410)495- | Landline | Verizon Maryland |
| (410)496- | Landline | Verizon Maryland |
| (410)497- | Landline | Comcast Ip Phone |
| (410)498- | Landline | Cavalier Telephone Mid-Atlantic |
| (410)499- | Wireless | Sprint Spectrum |
| (410)500- | Wireless | Sprint Spectrum |
| (410)501- | Landline | Lightwave Communications |
| (410)502- | Landline | Verizon Maryland |
| (410)503- | Landline | Verizon Maryland |
| (410)504- | Landline | Verizon Maryland |
| (410)505- | Landline | Verizon Maryland |
| (410)506- | Landline | Verizon Maryland |
| (410)507- | Wireless | Verizon Wireless |
| (410)508- | Landline | Verizon Maryland |
| (410)509- | Landline | Baltimore-Washington Telephone (Bwt) |
| (410)510- | Landline | Teleport Communications America |
| (410)512- | Landline | Verizon Maryland |
| (410)513- | Landline | Teleport Communications America |
| (410)514- | Landline | Verizon Maryland |
| (410)515- | Landline | Verizon Maryland |
| (410)516- | Landline | Verizon Maryland |
| (410)517- | Landline | Verizon Maryland |
| (410)518- | Landline | Verizon Maryland |
| (410)519- | Landline | Verizon Maryland |
| (410)520- | Landline | Verizon Maryland |
| (410)521- | Landline | Verizon Maryland |
| (410)522- | Landline | Verizon Maryland |
| (410)523- | Landline | Verizon Maryland |
| (410)524- | Landline | Verizon Maryland |
| (410)525- | Landline | Verizon Maryland |
| (410)526- | Landline | Verizon Maryland |
| (410)527- | Landline | Verizon Maryland |
| (410)528- | Landline | Verizon Maryland |
| (410)529- | Landline | Verizon Maryland |
| (410)530- | Wireless | New Cingular Wireless Pcs |
| (410)531- | Landline | Verizon Maryland |
| (410)532- | Landline | Verizon Maryland |
| (410)533- | Wireless | New Cingular Wireless Pcs |
| (410)534- | Landline | Verizon Maryland |
| (410)535- | Landline | Verizon Maryland |
| (410)536- | Landline | Verizon Maryland |
| (410)537- | Landline | Verizon Maryland |
| (410)538- | Landline | Verizon Maryland |
| (410)539- | Landline | Verizon Maryland |
| (410)540- | Landline | Verizon Maryland |
| (410)541- | Landline | Verizon Maryland |
| (410)542- | Landline | Verizon Maryland |
| (410)543- | Landline | Verizon Maryland |
| (410)544- | Landline | Verizon Maryland |
| (410)545- | Landline | Verizon Maryland |
| (410)546- | Landline | Verizon Maryland |
| (410)547- | Landline | Verizon Maryland |
| (410)548- | Landline | Verizon Maryland |
| (410)549- | Landline | Verizon Maryland |
| (410)550- | Landline | Verizon Maryland |
| (410)551- | Landline | Verizon Maryland |
| (410)552- | Landline | Verizon Maryland |
| (410)553- | Landline | Verizon Maryland |
| (410)554- | Landline | Verizon Maryland |
| (410)556- | Landline | Verizon Maryland |
| (410)557- | Landline | Verizon Maryland |
| (410)558- | Landline | Verizon Maryland |
| (410)559- | Landline | Teleport Communications America |
| (410)560- | Landline | Verizon Maryland |
| (410)561- | Landline | Verizon Maryland |
| (410)562- | Wireless | New Cingular Wireless Pcs |
| (410)563- | Landline | Verizon Maryland |
| (410)564- | Landline | Teleport Communications America |
| (410)565- | Landline | Level 3 Telecom Of Maryland |
| (410)566- | Landline | Verizon Maryland |
| (410)567- | Landline | Mcimetro Access Transmission Services |
| (410)568- | Landline | Teleport Communications America |
| (410)569- | Landline | Verizon Maryland |
| (410)570- | Wireless | New Cingular Wireless Pcs |
| (410)571- | Landline | Verizon Maryland |
| (410)572- | Landline | Verizon Maryland |
| (410)573- | Landline | Verizon Maryland |
| (410)574- | Landline | Verizon Maryland |
| (410)575- | Landline | Verizon Maryland |
| (410)576- | Landline | Verizon Maryland |
| (410)577- | Landline | Verizon Maryland |
| (410)578- | Landline | Verizon Maryland |
| (410)579- | Landline | Verizon Maryland |
| (410)580- | Landline | Verizon Maryland |
| (410)581- | Landline | Verizon Maryland |
| (410)582- | Landline | Verizon Maryland |
| (410)583- | Landline | Verizon Maryland |
| (410)584- | Landline | Verizon Maryland |
| (410)585- | Landline | Verizon Maryland |
| (410)586- | Landline | Verizon Maryland |
| (410)587- | Landline | Mcimetro Access Transmission Services |
| (410)588- | Landline | Verizon Maryland |
| (410)589- | Landline | Level 3 Telecom Of Maryland |
| (410)590- | Landline | Verizon Maryland |
| (410)591- | Wireless | Verizon Wireless |
| (410)592- | Landline | Verizon Maryland |
| (410)593- | Landline | Verizon Maryland |
| (410)594- | Landline | Verizon Maryland |
| (410)595- | Landline | Level 3 Telecom Of Maryland |
| (410)596- | Wireless | Verizon Wireless |
| (410)597- | Landline | Verizon Maryland |
| (410)598- | Wireless | Verizon Wireless |
| (410)599- | Wireless | New Cingular Wireless Pcs |
| (410)600- | Landline | Mcimetro Access Transmission Services |
| (410)601- | Landline | Verizon Maryland |
| (410)602- | Landline | Verizon Maryland |
| (410)603- | Wireless | New Cingular Wireless Pcs |
| (410)604- | Landline | Verizon Maryland |
| (410)605- | Landline | Verizon Maryland |
| (410)606- | Landline | Verizon Maryland |
| (410)607- | Wireless | Usa Mobility Wireless |
| (410)608- | Wireless | New Cingular Wireless Pcs |
| (410)609- | Landline | Verizon Maryland |
| (410)610- | Wireless | Verizon Wireless |
| (410)612- | Landline | Verizon Maryland |
| (410)613- | Landline | Verizon Maryland |
| (410)614- | Landline | Verizon Maryland |
| (410)615- | Wireless | New Cingular Wireless Pcs |
| (410)616- | Landline | Mcimetro Access Transmission Services |
| (410)617- | Landline | Verizon Maryland |
| (410)618- | Landline | Idt America |
| (410)619- | Landline | American Messaging Services |
| (410)620- | Landline | Verizon Maryland |
| (410)621- | Landline | Verizon Maryland |
| (410)622- | Landline | Mcimetro Access Transmission Services |
| (410)623- | Landline | Verizon Maryland |
| (410)624- | Landline | Verizon Maryland |
| (410)625- | Landline | Verizon Maryland |
| (410)626- | Landline | Verizon Maryland |
| (410)627- | Wireless | Verizon Wireless |
| (410)628- | Landline | Verizon Maryland |
| (410)629- | Landline | Verizon Maryland |
| (410)630- | Landline | Mcimetro Access Transmission Services |
| (410)631- | Landline | Verizon Maryland |
| (410)632- | Landline | Verizon Maryland |
| (410)633- | Landline | Verizon Maryland |
| (410)634- | Landline | Verizon Maryland |
| (410)635- | Landline | Verizon Maryland |
| (410)636- | Landline | Verizon Maryland |
| (410)637- | Landline | Verizon Maryland |
| (410)638- | Landline | Verizon Maryland |
| (410)639- | Landline | Verizon Maryland |
| (410)640- | Wireless | Usa Mobility Wireless |
| (410)641- | Landline | Verizon Maryland |
| (410)642- | Landline | Verizon Maryland |
| (410)643- | Landline | Verizon Maryland |
| (410)644- | Landline | Verizon Maryland |
| (410)645- | Landline | Mcimetro Access Transmission Services |
| (410)646- | Landline | Verizon Maryland |
| (410)647- | Landline | Verizon Maryland |
| (410)648- | Landline | Verizon Maryland |
| (410)649- | Landline | Teleport Communications America |
| (410)650- | Landline | Mcimetro Access Transmission Services |
| (410)651- | Landline | Verizon Maryland |
| (410)652- | Wireless | New Cingular Wireless Pcs |
| (410)653- | Landline | Verizon Maryland |
| (410)654- | Landline | Verizon Maryland |
| (410)655- | Landline | Verizon Maryland |
| (410)656- | Landline | Armstrong Telecommunications |
| (410)657- | Landline | Mcimetro Access Transmission Services |
| (410)658- | Landline | Armstrong Tel. Co. Of Maryland |
| (410)659- | Landline | Verizon Maryland |
| (410)660- | Wireless | Sprint Spectrum |
| (410)661- | Landline | Verizon Maryland |
| (410)662- | Landline | Verizon Maryland |
| (410)663- | Landline | Verizon Maryland |
| (410)664- | Landline | Verizon Maryland |
| (410)665- | Landline | Verizon Maryland |
| (410)666- | Landline | Verizon Maryland |
| (410)667- | Landline | Verizon Maryland |
| (410)668- | Landline | Verizon Maryland |
| (410)669- | Landline | Verizon Maryland |
| (410)670- | Landline | Mcimetro Access Transmission Services |
| (410)671- | Landline | Verizon Maryland |
| (410)672- | Landline | Verizon Maryland |
| (410)673- | Landline | Verizon Maryland |
| (410)674- | Landline | Verizon Maryland |
| (410)675- | Landline | Verizon Maryland |
| (410)676- | Landline | Verizon Maryland |
| (410)677- | Landline | Verizon Maryland |
| (410)678- | Wireless | Usa Mobility Wireless |
| (410)679- | Landline | Verizon Maryland |
| (410)680- | Landline | Level 3 Telecom Of Maryland |
| (410)681- | Wireless | Usa Mobility Wireless |
| (410)682- | Landline | Verizon Maryland |
| (410)683- | Landline | Verizon Maryland |
| (410)684- | Landline | Verizon Maryland |
| (410)685- | Landline | Verizon Maryland |
| (410)686- | Landline | Verizon Maryland |
| (410)687- | Landline | Verizon Maryland |
| (410)688- | Wireless | Verizon Wireless |
| (410)689- | Landline | Teleport Communications America |
| (410)690- | Landline | At&T |
| (410)691- | Landline | Verizon Maryland |
| (410)692- | Landline | Verizon Maryland |
| (410)693- | Wireless | New Cingular Wireless Pcs |
| (410)694- | Landline | Verizon Maryland |
| (410)695- | Landline | Verizon Maryland |
| (410)696- | Landline | Mcimetro Access Transmission Services |
| (410)697- | Landline | Mcimetro Access Transmission Services |
| (410)698- | Landline | Mcimetro Access Transmission Services |
| (410)699- | Wireless | Sprint Spectrum |
| (410)701- | Landline | Mcimetro Access Transmission Services |
| (410)702- | Landline | Mcimetro Access Transmission Services |
| (410)703- | Wireless | Verizon Wireless |
| (410)704- | Landline | Mcimetro Access Transmission Services |
| (410)705- | Landline | Bandwidth.Com Clec |
| (410)706- | Landline | Verizon Maryland |
| (410)707- | Wireless | Verizon Wireless |
| (410)708- | Wireless | Verizon Wireless |
| (410)709- | Landline | Mcimetro Access Transmission Services |
| (410)710- | Landline | Omnipoint Communications Cap Operations |
| (410)712- | Landline | Verizon Maryland |
| (410)713- | Landline | Level 3 Communications |
| (410)714- | Wireless | New Cingular Wireless Pcs |
| (410)715- | Landline | Verizon Maryland |
| (410)716- | Landline | Verizon Maryland |
| (410)717- | Landline | Level 3 Telecom Of Maryland |
| (410)718- | Wireless | New Cingular Wireless Pcs |
| (410)719- | Landline | Verizon Maryland |
| (410)720- | Landline | Verizon Maryland |
| (410)721- | Landline | Verizon Maryland |
| (410)722- | Landline | Verizon Maryland |
| (410)723- | Landline | Verizon Maryland |
| (410)724- | Landline | Verizon Maryland |
| (410)725- | Wireless | Sprint Spectrum |
| (410)726- | Wireless | Verizon Wireless |
| (410)727- | Landline | Verizon Maryland |
| (410)728- | Landline | Verizon Maryland |
| (410)729- | Landline | Verizon Maryland |
| (410)730- | Landline | Verizon Maryland |
| (410)731- | Wireless | Usa Mobility Wireless |
| (410)732- | Landline | Verizon Maryland |
| (410)733- | Wireless | New Cingular Wireless Pcs |
| (410)734- | Landline | Verizon Maryland |
| (410)735- | Landline | Cavalier Telephone Mid-Atlantic |
| (410)736- | Landline | Verizon Maryland |
| (410)737- | Landline | Verizon Maryland |
| (410)738- | Landline | Verizon Maryland |
| (410)739- | Wireless | New Cingular Wireless Pcs |
| (410)740- | Landline | Verizon Maryland |
| (410)741- | Landline | Verizon Maryland |
| (410)742- | Landline | Verizon Maryland |
| (410)743- | Wireless | Usa Mobility Wireless |
| (410)744- | Landline | Verizon Maryland |
| (410)745- | Landline | Verizon Maryland |
| (410)746- | Wireless | Verizon Wireless |
| (410)747- | Landline | Verizon Maryland |
| (410)748- | Wireless | Usa Mobility Wireless |
| (410)749- | Landline | Verizon Maryland |
| (410)750- | Landline | Verizon Maryland |
| (410)751- | Landline | Verizon Maryland |
| (410)752- | Landline | Verizon Maryland |
| (410)753- | Landline | Mcimetro Access Transmission Services |
| (410)754- | Landline | Verizon Maryland |
| (410)755- | Landline | Verizon Maryland |
| (410)756- | Landline | Verizon Maryland |
| (410)757- | Landline | Verizon Maryland |
| (410)758- | Landline | Verizon Maryland |
| (410)759- | Landline | Verizon Maryland |
| (410)760- | Landline | Verizon Maryland |
| (410)761- | Landline | Verizon Maryland |
| (410)762- | Landline | Verizon Maryland |
| (410)763- | Landline | Verizon Maryland |
| (410)764- | Landline | Verizon Maryland |
| (410)765- | Landline | Verizon Maryland |
| (410)766- | Landline | Verizon Maryland |
| (410)767- | Landline | Verizon Maryland |
| (410)768- | Landline | Verizon Maryland |
| (410)769- | Landline | Verizon Maryland |
| (410)770- | Landline | Verizon Maryland |
| (410)771- | Landline | Verizon Maryland |
| (410)772- | Landline | Verizon Maryland |
| (410)773- | Landline | Verizon Maryland |
| (410)774- | Landline | Mcimetro Access Transmission Services |
| (410)775- | Landline | Verizon Maryland |
| (410)776- | Landline | Teleport Communications America |
| (410)777- | Landline | Mcimetro Access Transmission Services |
| (410)778- | Landline | Verizon Maryland |
| (410)779- | Landline | Level 3 Communications |
| (410)780- | Landline | Verizon Maryland |
| (410)781- | Landline | Verizon Maryland |
| (410)782- | Landline | Verizon Maryland |
| (410)783- | Landline | Verizon Maryland |
| (410)784- | Landline | Verizon Maryland |
| (410)785- | Landline | Verizon Maryland |
| (410)786- | Landline | Mcimetro Access Transmission Services |
| (410)787- | Landline | Verizon Maryland |
| (410)788- | Landline | Verizon Maryland |
| (410)789- | Landline | Verizon Maryland |
| (410)790- | Wireless | New Cingular Wireless Pcs |
| (410)791- | Landline | Verizon Maryland |
| (410)792- | Landline | Verizon Maryland |
| (410)793- | Landline | Verizon Maryland |
| (410)794- | Landline | Level 3 Telecom Of Maryland |
| (410)795- | Landline | Verizon Maryland |
| (410)796- | Landline | Verizon Maryland |
| (410)797- | Landline | Verizon Maryland |
| (410)798- | Landline | Verizon Maryland |
| (410)799- | Landline | Verizon Maryland |
| (410)800- | Wireless | Verizon Wireless |
| (410)801- | Landline | Mcimetro Access Transmission Services |
| (410)802- | Wireless | New Cingular Wireless Pcs |
| (410)803- | Landline | Verizon Maryland |
| (410)804- | Wireless | Verizon Wireless |
| (410)805- | Wireless | Sprint Spectrum |
| (410)806- | Wireless | Usa Mobility Wireless |
| (410)807- | Landline | Level 3 Telecom Of Maryland |
| (410)808- | Wireless | Sprint Spectrum |
| (410)809- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (410)810- | Landline | Verizon Maryland |
| (410)812- | Wireless | New Cingular Wireless Pcs |
| (410)813- | Landline | Verizon Maryland |
| (410)814- | Landline | Cavalier Telephone Mid-Atlantic |
| (410)815- | Landline | Verizon Maryland |
| (410)816- | Landline | Verizon Maryland |
| (410)817- | Landline | Verizon Maryland |
| (410)818- | Landline | Teleport Communications America |
| (410)819- | Landline | Verizon Maryland |
| (410)820- | Landline | Verizon Maryland |
| (410)821- | Landline | Verizon Maryland |
| (410)822- | Landline | Verizon Maryland |
| (410)823- | Landline | Verizon Maryland |
| (410)824- | Landline | Level 3 Telecom Of Maryland |
| (410)825- | Landline | Verizon Maryland |
| (410)826- | Landline | Onvoy |
| (410)827- | Landline | Verizon Maryland |
| (410)828- | Landline | Verizon Maryland |
| (410)829- | Wireless | Verizon Wireless |
| (410)830- | Landline | Verizon Maryland |
| (410)831- | Landline | Omnipoint Communications Cap Operations |
| (410)832- | Landline | Verizon Maryland |
| (410)833- | Landline | Verizon Maryland |
| (410)834- | Landline | Centurylink Communications |
| (410)835- | Landline | Verizon Maryland |
| (410)836- | Landline | Verizon Maryland |
| (410)837- | Landline | Verizon Maryland |
| (410)838- | Landline | Verizon Maryland |
| (410)839- | Wireless | Usa Mobility Wireless |
| (410)840- | Landline | Verizon Maryland |
| (410)841- | Landline | Verizon Maryland |
| (410)842- | Landline | Mcimetro Access Transmission Services |
| (410)843- | Landline | Teleport Communications America |
| (410)844- | Landline | Peerless Network Of Maryland |
| (410)845- | Wireless | Sprint Spectrum |
| (410)846- | Landline | Mcimetro Access Transmission Services |
| (410)847- | Landline | Verizon Maryland |
| (410)848- | Landline | Verizon Maryland |
| (410)849- | Landline | Verizon Maryland |
| (410)850- | Landline | Verizon Maryland |
| (410)851- | Landline | Verizon Maryland |
| (410)852- | Wireless | New Cingular Wireless Pcs |
| (410)853- | Landline | Verizon Maryland |
| (410)854- | Landline | Verizon Maryland |
| (410)855- | Landline | Verizon Maryland |
| (410)856- | Landline | Verizon Maryland |
| (410)857- | Landline | Verizon Maryland |
| (410)858- | Landline | Verizon Maryland |
| (410)859- | Landline | Verizon Maryland |
| (410)860- | Landline | Verizon Maryland |
| (410)861- | Landline | Verizon Maryland |
| (410)862- | Landline | Onvoy |
| (410)863- | Landline | Verizon Maryland |
| (410)864- | Landline | Mcimetro Access Transmission Services |
| (410)865- | Landline | Verizon Maryland |
| (410)866- | Landline | Verizon Maryland |
| (410)867- | Landline | Verizon Maryland |
| (410)868- | Wireless | New Cingular Wireless Pcs |
| (410)869- | Landline | Verizon Maryland |
| (410)870- | Landline | Comcast Ip Phone |
| (410)871- | Landline | Verizon Maryland |
| (410)872- | Landline | Verizon Maryland |
| (410)873- | Landline | Verizon Maryland |
| (410)874- | Landline | Mcimetro Access Transmission Services |
| (410)875- | Landline | Verizon Maryland |
| (410)876- | Landline | Verizon Maryland |
| (410)877- | Landline | Verizon Maryland |
| (410)878- | Landline | Mcimetro Access Transmission Services |
| (410)879- | Landline | Verizon Maryland |
| (410)880- | Landline | Verizon Maryland |
| (410)881- | Landline | Mcimetro Access Transmission Services |
| (410)882- | Landline | Verizon Maryland |
| (410)883- | Landline | Verizon Maryland |
| (410)884- | Landline | Verizon Maryland |
| (410)885- | Landline | Verizon Maryland |
| (410)886- | Landline | Verizon Maryland |
| (410)887- | Landline | Verizon Maryland |
| (410)888- | Landline | Verizon Maryland |
| (410)889- | Landline | Verizon Maryland |
| (410)890- | Wireless | Usa Mobility Wireless |
| (410)891- | Landline | Mcimetro Access Transmission Services |
| (410)892- | Landline | Verizon Maryland |
| (410)893- | Landline | Verizon Maryland |
| (410)894- | Wireless | Usa Mobility Wireless |
| (410)895- | Landline | Verizon Maryland |
| (410)896- | Landline | Verizon Maryland |
| (410)897- | Landline | Verizon Maryland |
| (410)898- | Landline | Verizon Maryland |
| (410)899- | Wireless | Usa Mobility Wireless |
| (410)900- | Landline | Ctc Communications |
| (410)901- | Landline | Verizon Maryland |
| (410)902- | Landline | Verizon Maryland |
| (410)903- | Wireless | Sprint Spectrum |
| (410)904- | Landline | Mcimetro Access Transmission Services |
| (410)905- | Wireless | Sprint Spectrum |
| (410)906- | Landline | Verizon Maryland |
| (410)907- | Landline | Mcimetro Access Transmission Services |
| (410)908- | Wireless | Sprint Spectrum |
| (410)909- | Wireless | Usa Mobility Wireless |
| (410)910- | Landline | Mcimetro Access Transmission Services |
| (410)912- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (410)913- | Wireless | Verizon Wireless |
| (410)914- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (410)915- | Landline | Baltimore-Washington Telephone (Bwt) |
| (410)916- | Wireless | Verizon Wireless |
| (410)917- | Wireless | New Cingular Wireless Pcs |
| (410)918- | Landline | Verizon Maryland |
| (410)919- | Landline | Mcimetro Access Transmission Services |
| (410)920- | Wireless | New Cingular Wireless Pcs |
| (410)921- | Landline | Level 3 Telecom Of Maryland |
| (410)922- | Landline | Verizon Maryland |
| (410)923- | Landline | Verizon Maryland |
| (410)924- | Wireless | Verizon Wireless |
| (410)925- | Wireless | Verizon Wireless |
| (410)926- | Wireless | New Cingular Wireless Pcs |
| (410)927- | Landline | Level 3 Telecom Of Maryland |
| (410)928- | Landline | Verizon Maryland |
| (410)929- | Landline | Bandwidth.Com Clec |
| (410)930- | Landline | Redi-Call Communications Co. |
| (410)931- | Landline | Verizon Maryland |
| (410)932- | Wireless | Usa Mobility Wireless |
| (410)933- | Landline | Verizon Maryland |
| (410)934- | Wireless | New Cingular Wireless Pcs |
| (410)935- | Wireless | Verizon Wireless |
| (410)936- | Landline | Comcast Ip Phone |
| (410)937- | Wireless | Verizon Wireless |
| (410)938- | Landline | Verizon Maryland |
| (410)939- | Landline | Verizon Maryland |
| (410)940- | Landline | Atx Telecommunications Services, Ltd. |
| (410)941- | Landline | Verizon Maryland |
| (410)942- | Landline | Verizon Maryland |
| (410)943- | Landline | Verizon Maryland |
| (410)944- | Landline | Verizon Maryland |
| (410)945- | Landline | Verizon Maryland |
| (410)946- | Landline | Verizon Maryland |
| (410)947- | Landline | Verizon Maryland |
| (410)948- | Wireless | New Cingular Wireless Pcs |
| (410)949- | Landline | Mcimetro Access Transmission Services |
| (410)951- | Landline | Teleport Communications America |
| (410)952- | Wireless | Verizon Wireless |
| (410)953- | Landline | Verizon Maryland |
| (410)955- | Landline | Verizon Maryland |
| (410)956- | Landline | Verizon Maryland |
| (410)957- | Landline | Verizon Maryland |
| (410)960- | Wireless | Verizon Wireless |
| (410)961- | Wireless | Sprint Spectrum |
| (410)962- | Landline | Verizon Maryland |
| (410)963- | Wireless | Sprint Spectrum |
| (410)964- | Landline | Verizon Maryland |
| (410)965- | Landline | Verizon Maryland |
| (410)966- | Landline | Verizon Maryland |
| (410)967- | Wireless | New Cingular Wireless Pcs |
| (410)968- | Landline | Verizon Maryland |
| (410)969- | Landline | Verizon Maryland |
| (410)970- | Landline | Mcimetro Access Transmission Services |
| (410)971- | Wireless | New Cingular Wireless Pcs |
| (410)972- | Landline | Teleport Communications America |
| (410)973- | Landline | Mcc Telephony Of The Mid-Atlantic |
| (410)974- | Landline | Verizon Maryland |
| (410)975- | Landline | Verizon Maryland |
| (410)977- | Wireless | Sprint Spectrum |
| (410)978- | Wireless | New Cingular Wireless Pcs |
| (410)979- | Wireless | New Cingular Wireless Pcs |
| (410)980- | Wireless | Verizon Wireless |
| (410)981- | Landline | Verizon Maryland |
| (410)982- | Landline | Quantum Telecommunications |
| (410)983- | Landline | Verizon Maryland |
| (410)984- | Wireless | Sprint Spectrum |
| (410)985- | Landline | Baltimore-Washington Telephone (Bwt) |
| (410)986- | Landline | Verizon Maryland |
| (410)987- | Landline | Verizon Maryland |
| (410)988- | Landline | Verizon Maryland |
| (410)989- | Landline | Verizon Maryland |
| (410)990- | Landline | Verizon Maryland |
| (410)991- | Wireless | Verizon Wireless |
| (410)992- | Landline | Verizon Maryland |
| (410)993- | Landline | Verizon Maryland |
| (410)994- | Landline | Verizon Maryland |
| (410)995- | Landline | Verizon Maryland |
| (410)996- | Landline | Verizon Maryland |
| (410)997- | Landline | Verizon Maryland |
| (410)998- | Landline | Verizon Maryland |
| (410)999- | Landline | Baltimore-Washington Telephone (Bwt) |
| No prefixes match “”. | ||
Frequently Asked Questions about the 410 Area Code
Who called me from a 410 number?
A 410 number is assigned to Baltimore, Maryland, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 410 code to look nearby, so a 410 number doesn't prove the caller is local. Recently, 1,390 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (65% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 410 a scam area code?
No area code is a scam on its own. 410 is a normal, officially assigned code for Baltimore, Maryland. Spam callers spoof local codes to raise the odds you answer, so 410 on your caller ID says nothing about who is really calling. Recently, 1,390 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (65% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 410 area code?
Repeated calls from different 410 numbers are usually spoofing: a robocaller rotates through 410 numbers so each call looks local and slips past simple blocks. Recently, 1,390 unwanted-call complaints were reported to the FTC for numbers showing the 410 code (65% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 410 number?
If you aren't expecting a 410 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 410 area code?
Block a single 410 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 410 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 410?
Area code 410 covers Baltimore and the surrounding area in Maryland, spanning 208 cities with about 3,212,271 residents. It shares its area with overlay codes 443, 667.
When did area code 410 go into service?
Area code 410 went into service on October 6, 1991. It was split off from area code 301.
Is 410 a real area code?
Yes. 410 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Baltimore, Maryland. A real code can still show up on spoofed spam calls, so treat unknown 410 calls with normal caution.
What timezone is the 410 area code in?
The 410 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 410 caller may not be in that zone.
How do I call a 410 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 410 and the seven-digit number. From a mobile phone you can usually just enter +1 410 followed by the number and let the phone add the exit code for you.