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.

Washington Zone 2, MD

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-956 2 SLSPMD913MD  939H COMMIO, LLC 236      
240-956 3 SLSPMD913MD  939H COMMIO, LLC 236      
240-956 4 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-956 5 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-956 6 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-956 7 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-956 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-956 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-202 A BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-202 0 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-202 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-202 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-202 3 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
301-202 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-202 5 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236      
301-202 6 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236      
301-202 7 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236      
301-202 8 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236      
301-202 9 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236      
301-204 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-204 8 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-204 9 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-214 A BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-215 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-215 2 CHCHMDBEX4X  551G NUSO, LLC 236      
301-215 3 CHCHMDBEX4X  551G NUSO, LLC 236      
301-215 4 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 5 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 6 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 7 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 8 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-215 9 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-219 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-221 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-222 A HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 0 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 1 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 2 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 3 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-222 4 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 5 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 6 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-222 8 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-222 9 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
301-224 A SLSPMDSSX6X  6630 USA MOBILITY WIRELESS, INC. 236      
301-227 A BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-229 A BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-243 A BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-243 0   9212 VERIZON MARYLAND, INC. 236      
301-243 1   9212 VERIZON MARYLAND, INC. 236      
301-243 2   9212 VERIZON MARYLAND, INC. 236      
301-243 3   9212 VERIZON MARYLAND, INC. 236      
301-243 4   9212 VERIZON MARYLAND, INC. 236      
301-243 5   9212 VERIZON MARYLAND, INC. 236      
301-243 6   9212 VERIZON MARYLAND, INC. 236      
301-243 7   9212 VERIZON MARYLAND, INC. 236      
301-243 8   9212 VERIZON MARYLAND, INC. 236      
301-243 9   9212 VERIZON MARYLAND, INC. 236      
301-263 A BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-263 0 BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-263 1 BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-263 2 BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-263 3 VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-263 4 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-263 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-263 6 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-263 7 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-263 8 LARLMDCCDS0  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236      
301-263 9 BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-269 A WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 0 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 1 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 2 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 3 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 4 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 5 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 6 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 7 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-269 8 WASHDCMTX7X  2697 CTC COMMUNICATIONS CORP. - MD 236      
301-269 9 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-272 1 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 2 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 3 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 4 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-272 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-272 6 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-272 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.