Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

Block: A

<< 1 2 3 4 5 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-301 A Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-302 A Cecilton MD SLBRMDSBWMD  073H TELNYX LLC 242      
667-303 A Baltimore MD BLTMMDCHDMD  551G NUSO, LLC 238      
667-304 A Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-305 A Pikesville MD BLTMMDCHDMD  551G NUSO, LLC 238      
667-306 A Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-307 A Crofton MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
667-308 A Towson MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
667-309 A Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-310 A Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-312 A Baltimore MD BLTMMDSN1MD  361H ATLANTECH ONLINE, INC. - MD 238      
667-313 A Pikesville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
667-314 A Westminster MD BLTQMD012MD  964H BARR TELL USA, INC. 238      
667-315 A Bel Air MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-316 A Oxford MD SLBRMDSBXMD  073H TELNYX LLC 242      
667-317 A Princess Anne MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242      
667-318 A Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-319 A Chestertown MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
667-320 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-321 A Prince Frederick MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-322 A Waterloo (Washington DC LATA) MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
667-323 A Queenstown MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242      
667-324 A Randallstown MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-325 A Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-326 A Church Hill MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-327 A Cambridge MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-328 A Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-329 A Parkton MD BLTMMDCHXTX  073H TELNYX LLC 238      
667-330 A Salisbury MD   829J PAETEC ITEL, LLC 242   2025-04-01   
667-331 A Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-332 A New Windsor MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-333 A Armiger-Gibson Island MD BLTMMDSN3MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238      
667-334 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-335 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-336 A Bel Air MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-337 A Centreville MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-338 A Crofton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-339 A Sykesville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-340 A Churchville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-341 A Delmar MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-342 A Preston MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-343 A Cambridge MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-344 A Chase MD BLTMMDCHX7X  073H TELNYX LLC 238      
667-345 A Catonsville MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-346 A Salisbury MD SLBRMDSBY0X  425J CSC WIRELESS, LLC 242      
667-347 A Federalsburg MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-348 A Ridgely MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-349 A Still Pond MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-350 A Wingate MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-351 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-352 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-353 A Cardiff MD BLTQMD01DS0  469J CORETEL MARYLAND, INC. - MD 238      
667-354 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-355 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-356 A Severn MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-357 A Greensboro MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-358 A Easton MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
667-359 A Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-360 A Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-361 A Church Hill MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242      
667-362 A Annapolis MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-363 A Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-364 A Stevensville MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-365 A Chesapeake City MD SLBRMD90BMD  516J TON80 COMMUNICATIONS, LLC 242      
667-366 A Hampstead MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-367 A Westminster MD BLTMMDSN3MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238      
667-368 A Elkton MD BLTMMDCH40Z  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 238      
667-369 A Catonsville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-370 A Parkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-371 A Ellicott City MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-372 A Cambridge MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-373 A North Beach MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-374 A Waterloo MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-375 A Chase MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-376 A Oxford MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-377 A Rock Hall MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-378 A Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-379 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-380 A Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-381 A Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-382 A Wingate MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-383 A Towson MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-384 A Salisbury MD SLBRMD908MD  490J DISH WIRELESS, LLC 242      
667-385 A Solomons MD BLTQMD019MD  490J DISH WIRELESS, LLC 238      
667-386 A Arbutus MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
667-387 A Perryville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-388 A Severn MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-389 A Cambridge MD SLBRMD901MD  939H COMMIO, LLC 242      
667-390 A Randallstown MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-391 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-392 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-393 A Millersville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-394 A New Windsor MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-395 A Cardiff MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-396 A Port Deposit MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-397 A Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-398 A Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-399 A Union Bridge MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
667-400 A Baltimore MD BLTQMD012MD  964H BARR TELL USA, INC. 238      
667-401 A Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      

<< 1 2 3 4 5 >>

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.