443 Area CodeBaltimore, MD
Area code 443 covers Baltimore and 207 other cities in Maryland: 3,212,271 people in 17 counties, led by Baltimore County and Baltimore city, on Eastern Time (ET). It overlays 410 and 667.
Overview
- Major City
- Baltimore
- State
- Maryland (MD)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 410, 667
Where is area code 443?
Overview of the 443 Area Code
Geographic Coverage of the 443 Area Code
All 208 cities- 568,271
- 99,615
- 67,639
- 65,834
- 63,597
- 55,197
Baltimore Area Codes Overview
- 410Same territory
- 443This page
- 667Same territory
What cities does area code 443 cover?
| City | State | Population | Population in 443 | % 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; each city's share inside 443 is measured from Census tract centroids.
What counties does area code 443 cover?
| County | State | Population in 443 | % 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:
- Census PEP Vintage 2024 (city populations)
- · 2020 Census tract centroids with NANP and TIGERweb boundaries (footprint, counties, city shares)
- · NANPA NPA and CO Code reports (dates, prefixes)
- · Methodology
Has area code 443 been reported for unwanted calls?
Yes – 2,472 FTC complaints, May 29 – Oct 1, 2026.
- 59% robocalls
- ↑ 5% vs prior period
- FTC data, retrieved 2026-10-05
Most-reported subjects
- Other42%1,043
- Dropped call or no message16%393
- Reducing your debt (credit cards, mortgage, student loans)14%342
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.
Which prefixes and exchanges belong to area code 443?
78% assigned to a telco
- 66% Landline
- 34% Wireless
- 0% Unknown
of 783 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (443)200- | Landline | Mcimetro Access Transmission Services |
| (443)201- | Wireless | New Cingular Wireless Pcs |
| (443)202- | Wireless | Verizon Wireless |
| (443)203- | Landline | Verizon Maryland |
| (443)204- | Wireless | New Cingular Wireless Pcs |
| (443)205- | Wireless | Sprint Spectrum |
| (443)206- | Wireless | Verizon Wireless |
| (443)207- | Landline | Omnipoint Communications Enterprises |
| (443)208- | Wireless | Sprint Spectrum |
| (443)209- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)210- | Wireless | Sprint Spectrum |
| (443)212- | Landline | Us Lec Of Maryland |
| (443)213- | Landline | Verizon Maryland |
| (443)214- | Wireless | New Cingular Wireless Pcs |
| (443)215- | Landline | Core Communications |
| (443)216- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)217- | Landline | Core Communications |
| (443)218- | Landline | Global Crossing Local Services |
| (443)219- | Landline | Level 3 Communications |
| (443)220- | Landline | Verizon Maryland |
| (443)221- | Landline | Level 3 Communications |
| (443)222- | Landline | Xo Maryland |
| (443)223- | Wireless | Verizon Wireless |
| (443)224- | Landline | Mcimetro Access Transmission Services |
| (443)225- | Wireless | Sprint Spectrum |
| (443)226- | Wireless | Sprint Spectrum |
| (443)227- | Landline | Ctc Communications |
| (443)228- | Landline | Us Lec Of Maryland |
| (443)229- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)230- | Landline | Ctc Communications |
| (443)231- | Landline | Teleport Communications America |
| (443)232- | Landline | Core Communications |
| (443)233- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)234- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)235- | Wireless | Verizon Wireless |
| (443)236- | Landline | Core Communications |
| (443)237- | Landline | Core Communications |
| (443)238- | Landline | Ctc Communications |
| (443)239- | Wireless | New Cingular Wireless Pcs |
| (443)240- | Wireless | New Cingular Wireless Pcs |
| (443)241- | Landline | Onvoy |
| (443)242- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)243- | Wireless | Verizon Wireless |
| (443)244- | Landline | Level 3 Communications |
| (443)245- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)246- | Landline | Core Communications |
| (443)247- | Landline | Ctc Communications |
| (443)248- | Wireless | Verizon Wireless |
| (443)249- | Landline | Verizon Maryland |
| (443)250- | Wireless | Sprint Spectrum |
| (443)251- | Landline | Local Access |
| (443)252- | Wireless | Verizon Wireless |
| (443)253- | Wireless | New Cingular Wireless Pcs |
| (443)254- | Landline | Omnipoint Communications Cap Operations |
| (443)255- | Wireless | New Cingular Wireless Pcs |
| (443)256- | Landline | Ctc Communications |
| (443)257- | Wireless | Verizon Wireless |
| (443)258- | Wireless | New Cingular Wireless Pcs |
| (443)259- | Landline | Verizon Maryland |
| (443)260- | Landline | Verizon Maryland |
| (443)261- | Landline | Mcimetro Access Transmission Services |
| (443)262- | Landline | Verizon Maryland |
| (443)263- | Landline | Verizon Maryland |
| (443)264- | Landline | Core Communications |
| (443)265- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)266- | Landline | Global Crossing Local Services |
| (443)267- | Landline | Teleport Communications America |
| (443)268- | Landline | Core Communications |
| (443)269- | Landline | Core Communications |
| (443)270- | Landline | Paetec Communications |
| (443)271- | Wireless | Sprint Spectrum |
| (443)272- | Landline | Teleport Communications America |
| (443)273- | Landline | Teleport Communications America |
| (443)274- | Landline | Verizon Maryland |
| (443)275- | Landline | Comcast Ip Phone |
| (443)276- | Landline | Mcimetro Access Transmission Services |
| (443)277- | Wireless | Sprint Spectrum |
| (443)278- | Landline | Global Telecom Brokers |
| (443)279- | Landline | Mcimetro Access Transmission Services |
| (443)280- | Wireless | New Cingular Wireless Pcs |
| (443)281- | Landline | Mcimetro Access Transmission Services |
| (443)282- | Wireless | Sprint Spectrum |
| (443)283- | Landline | Paetec Communications |
| (443)284- | Landline | Xo Maryland |
| (443)285- | Landline | Verizon Maryland |
| (443)286- | Wireless | Verizon Wireless |
| (443)287- | Landline | Verizon Maryland |
| (443)288- | Landline | Mcimetro Access Transmission Services |
| (443)289- | Landline | Mcimetro Access Transmission Services |
| (443)290- | Landline | Level 3 Telecom Of Maryland |
| (443)291- | Landline | Global Crossing Local Services |
| (443)292- | Landline | Level 3 Communications |
| (443)293- | Landline | Global Crossing Local Services |
| (443)294- | Landline | Global Crossing Local Services |
| (443)295- | Landline | Level 3 Communications |
| (443)296- | Landline | Global Crossing Local Services |
| (443)297- | Landline | Teleport Communications America |
| (443)298- | Wireless | New Cingular Wireless Pcs |
| (443)299- | Landline | Global Crossing Local Services |
| (443)300- | Landline | Level 3 Communications |
| (443)301- | Wireless | New Cingular Wireless Pcs |
| (443)302- | Landline | Global Crossing Local Services |
| (443)303- | Landline | Global Crossing Local Services |
| (443)304- | Landline | Global Crossing Local Services |
| (443)305- | Landline | Global Crossing Local Services |
| (443)306- | Wireless | Sprint Spectrum |
| (443)307- | Landline | Global Crossing Local Services |
| (443)308- | Landline | Mcimetro Access Transmission Services |
| (443)309- | Wireless | Sprint Spectrum |
| (443)310- | Wireless | New Cingular Wireless Pcs |
| (443)312- | Landline | Global Crossing Local Services |
| (443)313- | Landline | Global Crossing Local Services |
| (443)314- | Wireless | Sprint Spectrum |
| (443)315- | Landline | Global Crossing Local Services |
| (443)316- | Landline | Global Crossing Local Services |
| (443)317- | Landline | Global Crossing Local Services |
| (443)318- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)319- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)320- | Landline | Global Crossing Local Services |
| (443)321- | Landline | Paetec Communications |
| (443)322- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)323- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)324- | Wireless | Sprint Spectrum |
| (443)325- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)326- | Wireless | New Cingular Wireless Pcs |
| (443)327- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)328- | Landline | Ctc Communications |
| (443)329- | Landline | Global Crossing Local Services |
| (443)330- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)331- | Landline | Ctc Communications |
| (443)332- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)333- | Wireless | New Cingular Wireless Pcs |
| (443)334- | Landline | Mcimetro Access Transmission Services |
| (443)335- | Landline | Xo Maryland |
| (443)336- | Wireless | Sprint Spectrum |
| (443)337- | Landline | Core Communications |
| (443)338- | Landline | Ctc Communications |
| (443)339- | Landline | Ctc Communications |
| (443)340- | Wireless | Verizon Wireless |
| (443)341- | Landline | Level 3 Communications |
| (443)342- | Landline | Ctc Communications |
| (443)343- | Landline | Teleport Communications America |
| (443)344- | Landline | Core Communications |
| (443)345- | Landline | Level 3 Communications |
| (443)346- | Landline | Core Communications |
| (443)347- | Landline | Ctc Communications |
| (443)348- | Landline | Teleport Communications America |
| (443)349- | Landline | Core Communications |
| (443)350- | Wireless | Verizon Wireless |
| (443)351- | Landline | Us Lec Of Maryland |
| (443)352- | Landline | Level 3 Communications |
| (443)353- | Landline | Verizon Maryland |
| (443)354- | Landline | Level 3 Communications |
| (443)355- | Landline | Level 3 Communications |
| (443)356- | Landline | Level 3 Communications |
| (443)357- | Landline | Verizon Maryland |
| (443)358- | Landline | Ymax Communications |
| (443)359- | Wireless | Verizon Wireless |
| (443)360- | Landline | Teleport Communications America |
| (443)361- | Landline | Core Communications |
| (443)362- | Landline | Omnipoint Communications Cap Operations |
| (443)363- | Landline | Xo Maryland |
| (443)364- | Landline | Teleport Communications America |
| (443)365- | Landline | Omnipoint Communications Cap Operations |
| (443)366- | Wireless | Sprint Spectrum |
| (443)367- | Landline | Verizon Maryland |
| (443)368- | Landline | Core Communications |
| (443)369- | Landline | Core Communications |
| (443)370- | Wireless | New Cingular Wireless Pcs |
| (443)371- | Landline | Level 3 Communications |
| (443)372- | Landline | Us Lec Of Maryland |
| (443)373- | Wireless | Sprint Spectrum |
| (443)374- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)375- | Wireless | Sprint Spectrum |
| (443)376- | Landline | Teleport Communications America |
| (443)377- | Wireless | Verizon Wireless |
| (443)378- | Wireless | Sprint Spectrum |
| (443)379- | Landline | Comcast Ip Phone |
| (443)380- | Landline | Level 3 Communications |
| (443)381- | Wireless | New Cingular Wireless Pcs |
| (443)382- | Landline | Core Communications |
| (443)383- | Landline | Ctc Communications |
| (443)384- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)385- | Landline | Core Communications |
| (443)386- | Wireless | Verizon Wireless |
| (443)387- | Landline | Core Communications |
| (443)388- | Wireless | Verizon Wireless |
| (443)389- | Landline | Core Communications |
| (443)390- | Landline | Global Crossing Local Services |
| (443)391- | Landline | Global Crossing Local Services |
| (443)392- | Landline | At&T |
| (443)393- | Landline | Global Crossing Local Services |
| (443)394- | Landline | Verizon Maryland |
| (443)395- | Landline | Verizon Maryland |
| (443)396- | Landline | Global Crossing Local Services |
| (443)397- | Wireless | Verizon Wireless |
| (443)398- | Wireless | Sprint Spectrum |
| (443)399- | Landline | Global Crossing Local Services |
| (443)400- | Landline | Mcimetro Access Transmission Services |
| (443)401- | Wireless | Verizon Wireless |
| (443)402- | Landline | Teleport Communications America |
| (443)403- | Landline | Level 3 Communications |
| (443)404- | Wireless | Sprint Spectrum |
| (443)405- | Landline | Global Crossing Local Services |
| (443)406- | Landline | Teleport Communications America |
| (443)407- | Landline | Mcimetro Access Transmission Services |
| (443)408- | Landline | Mcimetro Access Transmission Services |
| (443)409- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)410- | Landline | Centurylink Communications |
| (443)412- | Landline | Teleport Communications America |
| (443)413- | Wireless | Sprint Spectrum |
| (443)414- | Wireless | Sprint Spectrum |
| (443)415- | Wireless | Sprint Spectrum |
| (443)416- | Wireless | Sprint Spectrum |
| (443)417- | Landline | Teleport Communications America |
| (443)418- | Wireless | Sprint Spectrum |
| (443)419- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)420- | Landline | Global Crossing Local Services |
| (443)421- | Wireless | New Cingular Wireless Pcs |
| (443)422- | Wireless | New Cingular Wireless Pcs |
| (443)423- | Landline | Level 3 Communications |
| (443)424- | Landline | Teleport Communications America |
| (443)425- | Landline | Teleport Communications America |
| (443)426- | Landline | Paetec Communications |
| (443)427- | Landline | Core Communications |
| (443)428- | Landline | Core Communications |
| (443)429- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)430- | Landline | Mcimetro Access Transmission Services |
| (443)431- | Landline | Core Communications |
| (443)432- | Landline | Ctc Communications |
| (443)433- | Landline | Mcimetro Access Transmission Services |
| (443)434- | Landline | Telnyx |
| (443)435- | Wireless | Sprint Spectrum |
| (443)436- | Landline | Verizon Maryland |
| (443)437- | Landline | Teleport Communications America |
| (443)438- | Wireless | Verizon Wireless |
| (443)439- | Wireless | Verizon Wireless |
| (443)440- | Landline | Mcimetro Access Transmission Services |
| (443)441- | Landline | Teleport Communications America |
| (443)442- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)444- | Landline | Verizon Maryland |
| (443)445- | Landline | Verizon Maryland |
| (443)446- | Landline | Mcimetro Access Transmission Services |
| (443)447- | Wireless | New Cingular Wireless Pcs |
| (443)448- | Landline | Comcast Ip Phone |
| (443)449- | Landline | Broadview Networks |
| (443)450- | Landline | Level 3 Communications |
| (443)451- | Landline | Paetec Communications |
| (443)452- | Landline | Us Lec Of Maryland |
| (443)453- | Landline | Onvoy |
| (443)454- | Landline | Omnipoint Communications Cap Operations |
| (443)455- | Landline | Verizon Maryland |
| (443)456- | Landline | Comcast Ip Phone |
| (443)457- | Landline | Teleport Communications America |
| (443)458- | Landline | Mcimetro Access Transmission Services |
| (443)459- | Landline | Paetec Communications |
| (443)460- | Landline | Mcimetro Access Transmission Services |
| (443)461- | Landline | Us Lec Of Maryland |
| (443)462- | Wireless | Verizon Wireless |
| (443)463- | Wireless | Sprint Spectrum |
| (443)464- | Landline | Broadview Networks |
| (443)465- | Wireless | Verizon Wireless |
| (443)466- | Wireless | Sprint Spectrum |
| (443)467- | Wireless | New Cingular Wireless Pcs |
| (443)468- | Wireless | Sprint Spectrum |
| (443)469- | Wireless | New Cingular Wireless Pcs |
| (443)470- | Landline | Us Lec Of Maryland |
| (443)471- | Landline | Us Lec Of Maryland |
| (443)472- | Landline | Level 3 Communications |
| (443)473- | Wireless | Sprint Spectrum |
| (443)474- | Wireless | New Cingular Wireless Pcs |
| (443)475- | Landline | Mcimetro Access Transmission Services |
| (443)476- | Landline | Verizon Maryland |
| (443)477- | Wireless | Verizon Wireless |
| (443)478- | Wireless | Verizon Wireless |
| (443)479- | Landline | Verizon Maryland |
| (443)480- | Wireless | Verizon Wireless |
| (443)481- | Landline | Us Lec Of Maryland |
| (443)482- | Landline | Verizon Maryland |
| (443)483- | Landline | Level 3 Communications |
| (443)484- | Landline | Level 3 Communications |
| (443)485- | Landline | Level 3 Communications |
| (443)486- | Landline | Level 3 Communications |
| (443)487- | Landline | Level 3 Communications |
| (443)488- | Wireless | New Cingular Wireless Pcs |
| (443)489- | Landline | Teleport Communications America |
| (443)490- | Landline | Global Crossing Local Services |
| (443)491- | Landline | Global Crossing Local Services |
| (443)492- | Landline | Global Crossing Local Services |
| (443)493- | Wireless | Verizon Wireless |
| (443)494- | Landline | Global Crossing Local Services |
| (443)495- | Landline | Global Crossing Local Services |
| (443)496- | Wireless | Sprint Spectrum |
| (443)497- | Wireless | Sprint Spectrum |
| (443)498- | Landline | Mcimetro Access Transmission Services |
| (443)499- | Landline | Global Crossing Local Services |
| (443)500- | Wireless | New Cingular Wireless Pcs |
| (443)501- | Landline | Global Crossing Local Services |
| (443)502- | Landline | Teleport Communications America |
| (443)503- | Landline | Mcimetro Access Transmission Services |
| (443)504- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)505- | Landline | Global Crossing Local Services |
| (443)506- | Wireless | Sprint Spectrum |
| (443)507- | Landline | Teleport Communications America |
| (443)508- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)509- | Wireless | Verizon Wireless |
| (443)510- | Wireless | Verizon Wireless |
| (443)512- | Landline | Verizon Maryland |
| (443)513- | Wireless | New Cingular Wireless Pcs |
| (443)514- | Landline | Us Lec Of Maryland |
| (443)515- | Wireless | Verizon Wireless |
| (443)516- | Landline | Global Crossing Local Services |
| (443)517- | Landline | Global Crossing Local Services |
| (443)518- | Landline | Verizon Maryland |
| (443)519- | Landline | Global Crossing Local Services |
| (443)520- | Wireless | New Cingular Wireless Pcs |
| (443)521- | Wireless | Verizon Wireless |
| (443)522- | Landline | Paetec Communications |
| (443)523- | Landline | Verizon Maryland |
| (443)524- | Landline | Mcimetro Access Transmission Services |
| (443)525- | Wireless | New Cingular Wireless Pcs |
| (443)526- | Landline | Ctc Communications |
| (443)527- | Landline | Omnipoint Communications Cap Operations |
| (443)528- | Wireless | Sprint Spectrum |
| (443)529- | Landline | Omnipoint Communications Cap Operations |
| (443)530- | Landline | Paetec Communications |
| (443)531- | Wireless | New Cingular Wireless Pcs |
| (443)532- | Wireless | Sprint Spectrum |
| (443)533- | Landline | Teleport Communications America |
| (443)534- | Wireless | Verizon Wireless |
| (443)535- | Landline | Verizon Maryland |
| (443)536- | Wireless | Sprint Spectrum |
| (443)537- | Wireless | Verizon Wireless |
| (443)538- | Landline | Omnipoint Communications Cap Operations |
| (443)539- | Landline | Us Lec Of Maryland |
| (443)540- | Wireless | New Cingular Wireless Pcs |
| (443)541- | Landline | Paetec Communications |
| (443)542- | Landline | Comcast Ip Phone |
| (443)543- | Landline | Verizon Maryland |
| (443)544- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)545- | Landline | Level 3 Communications |
| (443)546- | Landline | Verizon Maryland |
| (443)547- | Wireless | Verizon Wireless |
| (443)548- | Landline | Mcimetro Access Transmission Services |
| (443)549- | Landline | Us Lec Of Maryland |
| (443)550- | Landline | Level 3 Communications |
| (443)551- | Landline | Level 3 Communications |
| (443)552- | Landline | Verizon Maryland |
| (443)553- | Wireless | Verizon Wireless |
| (443)554- | Landline | Omnipoint Communications Cap Operations |
| (443)556- | Landline | Verizon Maryland |
| (443)557- | Landline | Mcimetro Access Transmission Services |
| (443)558- | Landline | Mcimetro Access Transmission Services |
| (443)559- | Landline | Comcast Ip Phone |
| (443)560- | Wireless | Sprint Spectrum |
| (443)561- | Landline | Us Lec Of Maryland |
| (443)562- | Wireless | New Cingular Wireless Pcs |
| (443)563- | Wireless | Sprint Spectrum |
| (443)564- | Landline | Level 3 Communications |
| (443)565- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)566- | Wireless | Verizon Wireless |
| (443)567- | Landline | Level 3 Communications |
| (443)568- | Landline | Mcimetro Access Transmission Services |
| (443)569- | Landline | Level 3 Communications |
| (443)570- | Landline | Omnipoint Communications Cap Operations |
| (443)571- | Wireless | Verizon Wireless |
| (443)572- | Landline | Verizon Maryland |
| (443)573- | Landline | Us Lec Of Maryland |
| (443)574- | Landline | Us Lec Of Maryland |
| (443)575- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)576- | Landline | Mcimetro Access Transmission Services |
| (443)577- | Landline | Us Lec Of Maryland |
| (443)578- | Landline | Xo Maryland |
| (443)579- | Landline | Us Lec Of Maryland |
| (443)580- | Wireless | Sprint Spectrum |
| (443)581- | Landline | Xo Maryland |
| (443)582- | Landline | Ctc Communications |
| (443)583- | Landline | Ctc Communications |
| (443)584- | Landline | Ctc Communications |
| (443)585- | Landline | Ctc Communications |
| (443)586- | Landline | Xo Maryland |
| (443)587- | Landline | Ctc Communications |
| (443)588- | Landline | Mcimetro Access Transmission Services |
| (443)589- | Landline | Us Lec Of Maryland |
| (443)590- | Landline | Global Crossing Local Services |
| (443)591- | Wireless | Verizon Wireless |
| (443)592- | Landline | Core Communications |
| (443)593- | Landline | Ctc Communications |
| (443)594- | Landline | Global Crossing Local Services |
| (443)595- | Landline | Global Crossing Local Services |
| (443)596- | Landline | Xo Maryland |
| (443)597- | Landline | Global Crossing Local Services |
| (443)598- | Landline | Global Crossing Local Services |
| (443)599- | Landline | Global Crossing Local Services |
| (443)600- | Landline | Omnipoint Communications Cap Operations |
| (443)601- | Landline | Ctc Communications |
| (443)602- | Wireless | Verizon Wireless |
| (443)603- | Landline | Paetec Communications |
| (443)604- | Wireless | Verizon Wireless |
| (443)605- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)606- | Landline | Ctc Communications |
| (443)607- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)608- | Wireless | New Cingular Wireless Pcs |
| (443)609- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)610- | Wireless | Verizon Wireless |
| (443)612- | Landline | Verizon Maryland |
| (443)613- | Wireless | New Cingular Wireless Pcs |
| (443)614- | Wireless | Verizon Wireless |
| (443)615- | Wireless | Verizon Wireless |
| (443)616- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)617- | Wireless | Verizon Wireless |
| (443)618- | Wireless | Verizon Wireless |
| (443)619- | Wireless | Verizon Wireless |
| (443)620- | Landline | Teleport Communications America |
| (443)621- | Wireless | Sprint Spectrum |
| (443)622- | Wireless | Sprint Spectrum |
| (443)623- | Wireless | Sprint Spectrum |
| (443)624- | Wireless | Verizon Wireless |
| (443)625- | Landline | Level 3 Communications |
| (443)626- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)627- | Landline | Level 3 Communications |
| (443)628- | Landline | Core Communications |
| (443)629- | Wireless | Sprint Spectrum |
| (443)630- | Wireless | Verizon Wireless |
| (443)631- | Wireless | New Cingular Wireless Pcs |
| (443)632- | Landline | Us Lec Of Maryland |
| (443)633- | Wireless | Sprint Spectrum |
| (443)634- | Landline | Verizon Maryland |
| (443)635- | Wireless | New Cingular Wireless Pcs |
| (443)636- | Landline | Omnipoint Communications Cap Operations |
| (443)637- | Landline | Mcimetro Access Transmission Services |
| (443)638- | Landline | Global Naps South |
| (443)639- | Landline | Ctc Communications |
| (443)640- | Landline | Us Lec Of Maryland |
| (443)641- | Landline | Level 3 Communications |
| (443)642- | Wireless | Verizon Wireless |
| (443)643- | Landline | Verizon Maryland |
| (443)644- | Landline | Ctc Communications |
| (443)645- | Landline | Ctc Communications |
| (443)646- | Landline | Ctc Communications |
| (443)647- | Landline | Ctc Communications |
| (443)648- | Landline | Teleport Communications America |
| (443)649- | Landline | Us Lec Of Maryland |
| (443)650- | Landline | Mcimetro Access Transmission Services |
| (443)651- | Wireless | Verizon Wireless |
| (443)652- | Landline | Omnipoint Communications Cap Operations |
| (443)653- | Landline | Omnipoint Communications Cap Operations |
| (443)654- | Landline | Verizon Maryland |
| (443)655- | Wireless | New Cingular Wireless Pcs |
| (443)656- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)657- | Landline | Level 3 Telecom Of Maryland |
| (443)658- | Landline | Onvoy |
| (443)659- | Landline | Onvoy |
| (443)660- | Landline | Comcast Ip Phone |
| (443)661- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)662- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)663- | Landline | Verizon Maryland |
| (443)664- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)665- | Landline | Core Communications |
| (443)666- | Landline | Level 3 Communications |
| (443)668- | Wireless | New Cingular Wireless Pcs |
| (443)669- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)670- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)671- | Landline | Teleport Communications America |
| (443)672- | Landline | Teleport Communications America |
| (443)673- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)674- | Landline | Teleport Communications America |
| (443)675- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)676- | Wireless | New Cingular Wireless Pcs |
| (443)677- | Wireless | Sprint Spectrum |
| (443)678- | Landline | Verizon Maryland |
| (443)679- | Landline | Teleport Communications America |
| (443)680- | Wireless | Sprint Spectrum |
| (443)681- | Wireless | Verizon Wireless |
| (443)682- | Wireless | Verizon Wireless |
| (443)683- | Wireless | Verizon Wireless |
| (443)684- | Wireless | Verizon Wireless |
| (443)685- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)686- | Wireless | Verizon Wireless |
| (443)687- | Wireless | Verizon Wireless |
| (443)688- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)689- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)690- | Wireless | Verizon Wireless |
| (443)691- | Wireless | New Cingular Wireless Pcs |
| (443)692- | Landline | Mcimetro Access Transmission Services |
| (443)693- | Landline | Teleport Communications America |
| (443)694- | Wireless | Sprint Spectrum |
| (443)695- | Wireless | Verizon Wireless |
| (443)696- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)697- | Landline | Global Naps South |
| (443)698- | Landline | Teleport Communications America |
| (443)699- | Wireless | Verizon Wireless |
| (443)701- | Landline | Mcimetro Access Transmission Services |
| (443)702- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)703- | Landline | Mcimetro Access Transmission Services |
| (443)704- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)705- | Landline | Xo Maryland |
| (443)706- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)707- | Landline | Local Access |
| (443)708- | Landline | Level 3 Telecom Of Maryland |
| (443)709- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)710- | Landline | Mcimetro Access Transmission Services |
| (443)712- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)713- | Landline | Peerless Network Of Maryland |
| (443)714- | Wireless | Sprint Spectrum |
| (443)715- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)716- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)717- | Wireless | Verizon Wireless |
| (443)718- | Landline | Us Lec Of Maryland |
| (443)719- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)720- | Landline | Xo Maryland |
| (443)721- | Wireless | Verizon Wireless |
| (443)722- | Landline | Omnipoint Communications Cap Operations |
| (443)723- | Wireless | Sprint Spectrum |
| (443)724- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)725- | Landline | Paetec Communications |
| (443)726- | Wireless | Sprint Spectrum |
| (443)727- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)728- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)729- | Landline | Paetec Communications |
| (443)730- | Landline | Paetec Communications |
| (443)731- | Landline | Teleport Communications America |
| (443)732- | Landline | Teleport Communications America |
| (443)733- | Landline | Teleport Communications America |
| (443)734- | Landline | Verizon Maryland |
| (443)735- | Wireless | New Cingular Wireless Pcs |
| (443)736- | Wireless | New Cingular Wireless Pcs |
| (443)737- | Landline | Paetec Communications |
| (443)738- | Landline | Paetec Communications |
| (443)739- | Landline | Omnipoint Communications Cap Operations |
| (443)740- | Landline | Level 3 Communications |
| (443)741- | Landline | Mcimetro Access Transmission Services |
| (443)742- | Wireless | New Cingular Wireless Pcs |
| (443)743- | Wireless | Verizon Wireless |
| (443)744- | Wireless | Sprint Spectrum |
| (443)745- | Wireless | Verizon Wireless |
| (443)746- | Landline | Level 3 Communications |
| (443)747- | Landline | Core Communications |
| (443)748- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)749- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)750- | Wireless | Verizon Wireless |
| (443)751- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)752- | Wireless | Verizon Wireless |
| (443)753- | Landline | Mcimetro Access Transmission Services |
| (443)754- | Wireless | Verizon Wireless |
| (443)755- | Landline | Verizon Maryland |
| (443)756- | Wireless | New Cingular Wireless Pcs |
| (443)757- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)758- | Wireless | Verizon Wireless |
| (443)759- | Wireless | Verizon Wireless |
| (443)760- | Landline | At&T |
| (443)761- | Landline | Omnipoint Communications Cap Operations |
| (443)762- | Wireless | Sprint Spectrum |
| (443)763- | Landline | Omnipoint Communications Cap Operations |
| (443)764- | Landline | Omnipoint Communications Cap Operations |
| (443)765- | Wireless | New Cingular Wireless Pcs |
| (443)766- | Landline | Us Lec Of Maryland |
| (443)767- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)768- | Wireless | Sprint Spectrum |
| (443)769- | Landline | Omnipoint Communications Cap Operations |
| (443)770- | Landline | Verizon Maryland |
| (443)771- | Wireless | Verizon Wireless |
| (443)772- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)773- | Landline | Mcimetro Access Transmission Services |
| (443)774- | Wireless | New Cingular Wireless Pcs |
| (443)775- | Wireless | Verizon Wireless |
| (443)776- | Landline | Bandwidth.Com Clec |
| (443)777- | Landline | Verizon Maryland |
| (443)778- | Landline | Verizon Maryland |
| (443)779- | Landline | Xo Maryland |
| (443)780- | Landline | Us Lec Of Maryland |
| (443)781- | Landline | Xo Maryland |
| (443)782- | Landline | Xo Maryland |
| (443)783- | Wireless | Verizon Wireless |
| (443)784- | Landline | Teleport Communications America |
| (443)785- | Landline | Onvoy |
| (443)786- | Wireless | Verizon Wireless |
| (443)787- | Landline | Ctc Communications |
| (443)788- | Landline | Xo Maryland |
| (443)789- | Wireless | New Cingular Wireless Pcs |
| (443)790- | Wireless | Sprint Spectrum |
| (443)791- | Wireless | New Cingular Wireless Pcs |
| (443)792- | Landline | Verizon Maryland |
| (443)793- | Landline | Mcimetro Access Transmission Services |
| (443)794- | Wireless | New Cingular Wireless Pcs |
| (443)795- | Landline | Mcimetro Access Transmission Services |
| (443)796- | Landline | Mcimetro Access Transmission Services |
| (443)797- | Landline | Mcimetro Access Transmission Services |
| (443)798- | Landline | Level 3 Telecom Of Maryland |
| (443)799- | Wireless | New Cingular Wireless Pcs |
| (443)800- | Wireless | Sprint Spectrum |
| (443)801- | Wireless | Sprint Spectrum |
| (443)802- | Wireless | Sprint Spectrum |
| (443)803- | Wireless | Sprint Spectrum |
| (443)804- | Wireless | Sprint Spectrum |
| (443)805- | Landline | Omnipoint Communications Cap Operations |
| (443)806- | Wireless | Sprint Spectrum |
| (443)807- | Wireless | Sprint Spectrum |
| (443)808- | Landline | Bandwidth.Com Clec |
| (443)809- | Landline | Level 3 Communications |
| (443)810- | Wireless | Sprint Spectrum |
| (443)812- | Wireless | Verizon Wireless |
| (443)813- | Wireless | Verizon Wireless |
| (443)814- | Wireless | Verizon Wireless |
| (443)815- | Landline | Mcimetro Access Transmission Services |
| (443)816- | Landline | Mcimetro Access Transmission Services |
| (443)817- | Landline | Mcimetro Access Transmission Services |
| (443)818- | Landline | Level 3 Communications |
| (443)819- | Landline | Omnipoint Communications Cap Operations |
| (443)820- | Landline | Paetec Communications |
| (443)821- | Wireless | Sprint Spectrum |
| (443)822- | Wireless | Sprint Spectrum |
| (443)823- | Wireless | Verizon Wireless |
| (443)824- | Landline | Omnipoint Communications Cap Operations |
| (443)825- | Landline | Omnipoint Communications Cap Operations |
| (443)826- | Wireless | Verizon Wireless |
| (443)827- | Wireless | Verizon Wireless |
| (443)828- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)829- | Wireless | Sprint Spectrum |
| (443)830- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)831- | Wireless | New Cingular Wireless Pcs |
| (443)832- | Landline | Level 3 Communications |
| (443)833- | Landline | Us Lec Of Maryland |
| (443)834- | Wireless | Verizon Wireless |
| (443)835- | Wireless | Verizon Wireless |
| (443)836- | Landline | Xo Maryland |
| (443)837- | Landline | Us Lec Of Maryland |
| (443)838- | Wireless | New Cingular Wireless Pcs |
| (443)839- | Landline | Omnipoint Communications Cap Operations |
| (443)840- | Wireless | New Cingular Wireless Pcs |
| (443)841- | Landline | Verizon Maryland |
| (443)842- | Wireless | Verizon Wireless |
| (443)843- | Landline | Verizon Maryland |
| (443)844- | Wireless | Verizon Wireless |
| (443)845- | Wireless | Verizon Wireless |
| (443)846- | Wireless | New Cingular Wireless Pcs |
| (443)847- | Wireless | Verizon Wireless |
| (443)848- | Wireless | Sprint Spectrum |
| (443)849- | Landline | Verizon Maryland |
| (443)850- | Landline | Omnipoint Communications Cap Operations |
| (443)851- | Landline | Omnipoint Communications Cap Operations |
| (443)852- | Wireless | New Cingular Wireless Pcs |
| (443)853- | Wireless | Verizon Wireless |
| (443)854- | Landline | Omnipoint Communications Cap Operations |
| (443)855- | Landline | Lightwave Communications |
| (443)856- | Landline | Core Communications |
| (443)857- | Landline | Omnipoint Communications Cap Operations |
| (443)858- | Landline | Omnipoint Communications Cap Operations |
| (443)859- | Landline | Omnipoint Communications Cap Operations |
| (443)860- | Wireless | New Cingular Wireless Pcs |
| (443)861- | Landline | Verizon Maryland |
| (443)862- | Wireless | Verizon Wireless |
| (443)863- | Wireless | Verizon Wireless |
| (443)864- | Wireless | Sprint Spectrum |
| (443)865- | Wireless | Sprint Spectrum |
| (443)866- | Wireless | Sprint Spectrum |
| (443)867- | Landline | Paetec Communications |
| (443)868- | Landline | Verizon Maryland |
| (443)869- | Wireless | Verizon Wireless |
| (443)870- | Landline | Level 3 Telecom Of Maryland |
| (443)871- | Wireless | Sprint Spectrum |
| (443)872- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)873- | Landline | Onvoy |
| (443)874- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)875- | Wireless | New Cingular Wireless Pcs |
| (443)876- | Wireless | Sprint Spectrum |
| (443)877- | Landline | Level 3 Communications |
| (443)878- | Wireless | Verizon Wireless |
| (443)879- | Landline | Verizon Maryland |
| (443)880- | Landline | Teleport Communications America |
| (443)881- | Landline | Metropcs |
| (443)882- | Wireless | Sprint Spectrum |
| (443)883- | Landline | Teleport Communications America |
| (443)884- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)885- | Landline | Verizon Maryland |
| (443)886- | Landline | Teleport Communications America |
| (443)887- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)888- | Landline | Cavalier Telephone, Llc (Mid-Atlantic) |
| (443)889- | Landline | Omnipoint Communications Cap Operations |
| (443)890- | Wireless | Verizon Wireless |
| (443)891- | Landline | Mcimetro Access Transmission Services |
| (443)892- | Landline | Bandwidth.Com Clec |
| (443)893- | Landline | Mcimetro Access Transmission Services |
| (443)894- | Wireless | Sprint Spectrum |
| (443)895- | Wireless | Verizon Wireless |
| (443)896- | Landline | Teleport Communications America |
| (443)897- | Wireless | New Cingular Wireless Pcs |
| (443)898- | Landline | Level 3 Communications |
| (443)899- | Landline | Level 3 Communications |
| (443)900- | Wireless | Verizon Wireless |
| (443)901- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)902- | Wireless | Verizon Wireless |
| (443)903- | Wireless | Verizon Wireless |
| (443)904- | Wireless | Verizon Wireless |
| (443)905- | Wireless | Sprint Spectrum |
| (443)906- | Landline | Peerless Network Of Maryland |
| (443)907- | Wireless | Verizon Wireless |
| (443)908- | Wireless | Verizon Wireless |
| (443)909- | Wireless | Verizon Wireless |
| (443)910- | Wireless | New Cingular Wireless Pcs |
| (443)912- | Landline | Core Communications |
| (443)913- | Wireless | Sprint Spectrum |
| (443)914- | Landline | Teleport Communications America |
| (443)915- | Wireless | Verizon Wireless |
| (443)916- | Wireless | Sprint Spectrum |
| (443)917- | Landline | Onvoy |
| (443)918- | Landline | Teleport Communications America |
| (443)919- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)920- | Landline | Teleport Communications America |
| (443)921- | Landline | Paetec Communications |
| (443)922- | Landline | Atx Telecommunications Services, Ltd. |
| (443)923- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)924- | Wireless | Verizon Wireless |
| (443)925- | Landline | Omnipoint Communications Cap Operations |
| (443)926- | Landline | Level 3 Communications |
| (443)927- | Landline | Level 3 Communications |
| (443)928- | Wireless | Verizon Wireless |
| (443)929- | Landline | Omnipoint Communications Cap Operations |
| (443)930- | Wireless | Verizon Wireless |
| (443)931- | Landline | Mcimetro Access Transmission Services |
| (443)932- | Wireless | Sprint Spectrum |
| (443)933- | Landline | Teleport Communications America |
| (443)934- | Wireless | Verizon Wireless |
| (443)935- | Wireless | New Cingular Wireless Pcs |
| (443)936- | Wireless | New Cingular Wireless Pcs |
| (443)937- | Landline | Teleport Communications America |
| (443)938- | Wireless | Verizon Wireless |
| (443)939- | Landline | Omnipoint Communications Cap Operations |
| (443)940- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)941- | Wireless | New Cingular Wireless Pcs |
| (443)942- | Landline | Teleport Communications America |
| (443)943- | Landline | Teleport Communications America |
| (443)944- | Landline | Comcast Ip Phone |
| (443)945- | Wireless | New Cingular Wireless Pcs |
| (443)946- | Landline | Core Communications |
| (443)947- | Landline | Ctc Communications |
| (443)948- | Wireless | Sprint Spectrum |
| (443)949- | Landline | Comcast Ip Phone |
| (443)951- | Landline | Global Crossing Local Services |
| (443)952- | Wireless | Verizon Wireless |
| (443)953- | Wireless | Verizon Wireless |
| (443)954- | Landline | Paetec Communications |
| (443)955- | Wireless | Verizon Wireless |
| (443)956- | Wireless | New Cingular Wireless Pcs |
| (443)957- | Landline | At&T |
| (443)960- | Wireless | Verizon Wireless |
| (443)961- | Landline | Intrado Communications |
| (443)962- | Wireless | Verizon Wireless |
| (443)963- | Landline | Bandwidth.Com Clec |
| (443)964- | Landline | Level 3 Communications |
| (443)965- | Wireless | Sprint Spectrum |
| (443)966- | Wireless | Verizon Wireless |
| (443)967- | Landline | Verizon Maryland |
| (443)968- | Wireless | New Cingular Wireless Pcs |
| (443)969- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)970- | Wireless | Verizon Wireless |
| (443)971- | Landline | Bandwidth.Com Clec |
| (443)972- | Landline | Us Lec Of Maryland |
| (443)973- | Landline | Mcimetro Access Transmission Services |
| (443)974- | Landline | Teleport Communications America |
| (443)975- | Wireless | New Cingular Wireless Pcs |
| (443)977- | Wireless | Verizon Wireless |
| (443)978- | Wireless | Verizon Wireless |
| (443)979- | Wireless | Verizon Wireless |
| (443)980- | Wireless | New Cingular Wireless Pcs |
| (443)981- | Wireless | Verizon Wireless |
| (443)982- | Landline | Ymax Communications |
| (443)983- | Landline | Omnipoint Communications Cap Operations |
| (443)984- | Landline | Verizon Maryland |
| (443)985- | Landline | Omnipoint Communications Cap Operations |
| (443)986- | Wireless | Verizon Wireless |
| (443)987- | Wireless | Verizon Wireless |
| (443)988- | Landline | Level 3 Communications |
| (443)989- | Landline | Cavalier Telephone Mid-Atlantic |
| (443)990- | Landline | Bandwidth.Com Clec |
| (443)991- | Wireless | Verizon Wireless |
| (443)992- | Landline | Level 3 Communications |
| (443)993- | Landline | Metropcs |
| (443)994- | Wireless | New Cingular Wireless Pcs |
| (443)995- | Wireless | New Cingular Wireless Pcs |
| (443)996- | Wireless | New Cingular Wireless Pcs |
| (443)997- | Landline | Verizon Maryland |
| (443)998- | Landline | Verizon Maryland |
| No prefixes match “”. | ||
Frequently Asked Questions about the 443 Area Code
Who called me from a 443 number?
34% of its assigned prefixes are wireless. Largest holders: Verizon Wireless, Sprint Spectrum, and New Cingular Wireless Pcs.
Is 443 a scam area code?
Carriers hold 78% of its possible prefixes.
Why do I keep getting calls from the 443 area code?
Complaints rose 5% on the prior period.
Should I answer an unknown 443 number?
59% of its FTC complaints were robocalls. Its most-reported specific subject was "Dropped call or no message", at 16%.
Where is area code 443?
443 covers 208 cities and 3,212,271 residents in 17 Maryland counties, led by Baltimore County, Baltimore city, and Anne Arundel County.
When did area code 443 go into service?
443 went into service on June 1, 1997. It was added to overlay 410. 667 also shares its territory.
Is 443 a real area code?
Yes: 34 carriers hold its prefixes, serving 208 cities in Baltimore County, Baltimore city, Anne Arundel County, and 14 other counties.
What timezone is the 443 area code in?
443 is on Eastern Time (ET).
How do I call a 443 number from abroad?
Dial +1 443, then the number.