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

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-200 A Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-201 A Bel Air MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-202 A Elkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-203 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-204 A Annapolis MD   829J PAETEC ITEL, LLC 238   2025-04-01   
667-205 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-206 A Towson MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
667-207 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-208 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-209 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-210 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-212 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-213 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-214 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-215 A Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
667-216 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-217 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-218 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-219 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-220 A Greensboro MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-221 A Salisbury MD SLBRMD902MD  073H TELNYX LLC 242      
667-222 A Armiger-Gibson Island MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-223 A Baltimore MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238      
667-224 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-225 A Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-226 A St Michaels MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-227 A Salisbury MD SLBRMDSBPMD  361H ATLANTECH ONLINE, INC. - MD 242      
667-228 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-229 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-230 A Centreville MD SLBRMD90DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 242      
667-231 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-232 A Glen Burnie MD BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-233 A Baltimore MD BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
667-234 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-235 A Salisbury MD SLBRMD905MD  197D VONAGE AMERICA LLC 242      
667-236 A Perryville MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-237 A West River MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-238 A Preston MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-239 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-240 A Columbia MD BLTQMD012MD  964H BARR TELL USA, INC. 238      
667-241 A Ridgely MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-242 A Rock Hall MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-243 A Oxford MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-244 A Still Pond MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-245 A Cecilton MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-246 A Centreville MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-247 A Chesapeake City MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-248 A Denton MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-249 A Galena MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-250 A Baltimore MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-251 A Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-252 A Salisbury MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242      
667-253 A Salisbury MD SLBRMDSBAMD  551G NUSO, LLC 242      
667-254 A Chestertown MD SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-255 A Hillsboro MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-256 A Aberdeen MD BLTMMDCHXWX  114J EXIANT COMMUNICATIONS LLC 236      
667-257 A Columbia MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238      
667-258 A Baltimore MD BLTQMD017MD  996H AIRESPRING, INC. 238      
667-259 A Reisterstown MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
667-260 A Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-261 A Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-262 A Baltimore MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-263 A Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-264 A Delmar MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242      
667-265 A Vienna MD ESTNMDESRMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 242      
667-266 A Salisbury MD SLBRMD901MD  939H COMMIO, LLC 242      
667-267 A Annapolis MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-268 A Darlington MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-269 A Elkton MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-270 A Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-271 A Salisbury MD SLBRMDSBXZX  114J EXIANT COMMUNICATIONS LLC 242      
667-272 A Westminster MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-273 A Pikesville MD PIVLMDPKY0X  425J CSC WIRELESS, LLC 238      
667-274 A Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-275 A Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-276 A Bel Air MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
667-277 A Sherwood Forest MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-278 A Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-279 A Bishopville MD   876D ONVOY, LLC - MD 242   2025-04-15   
667-280 A Ellicott City MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238      
667-281 A Salisbury MD SLBRMD90DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 242      
667-282 A Tilghman MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-283 A Fork MD BLTMMDCHXAX  7421 AT&T - LOCAL 238      
667-284 A Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-285 A Hurlock MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-286 A Salisbury MD SLBRMD907MD  321J HD CARRIER LLC 242      
667-287 A Bishopville MD SLBRMDSBX0Y  478J NUSO, LLC 242      
667-288 A Berlin MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242      
667-289 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-290 A Baltimore MD BLTMMDCHXHX  515J IP HORIZON LLC 238      
667-291 A Millington MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-292 A Salisbury MD SLBRMDSBXRX  515J IP HORIZON LLC 242      
667-293 A Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-294 A Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-295 A Crofton MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-296 A Reisterstown MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
667-297 A Edgewood MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
667-298 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
667-299 A Annapolis MD BLTMMDCHX7Y  321J HD CARRIER LLC 238      
667-300 A Columbia MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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