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 5, MD

<< 1 2 3 4 5 6 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-417 2 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 3 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 4 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 5 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 6 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 7 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 8 BTVLMD127MD  5562 METROPCS, INC. 236      
240-417 9 BTVLMD127MD  5562 METROPCS, INC. 236      
240-455 A STNGVA08AMD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-455 0 STNGVA08AMD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-455 1 STNGVA08AMD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-455 2 BTVLMD127MD  5562 METROPCS, INC. 236      
240-455 3 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-455 4 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-455 5 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-455 6 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-455 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-455 8 BTVLMD127MD  5562 METROPCS, INC. 236      
240-455 9 STNGVA08AMD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-492 A TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 0 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 1 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 2 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 3 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 4 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-492 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-492 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-492 7 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-492 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-492 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-508 A BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 0 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 1 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 2 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 3 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 4 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 5 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 6 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 7 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 8 BTVLMD127MD  5562 METROPCS, INC. 236      
240-508 9 BTVLMD127MD  5562 METROPCS, INC. 236      
240-532 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-532 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-532 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-532 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-532 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-532 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-532 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-532 6 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-532 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-532 8 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-532 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-563 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-563 0 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-563 1 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-563 2 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-563 3 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-563 4 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-563 5 WASHDC126MD  964H BARR TELL USA, INC. 236      
240-563 6   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-563 7 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-563 8   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-563 9 VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-612 A LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 0 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 1 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 2 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 3 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 4 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 5 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 6 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 7 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 8 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-612 9 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-619 A ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-619 0 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-619 1 WASHDCMTX7X  2697 CTC COMMUNICATIONS CORP. - MD 236      
240-619 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-619 3 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-619 4 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-619 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-619 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-619 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-619 8 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-619 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-677 A WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-677 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-691 A WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-691 0   624H ONVOY SPECTRUM, LLC 236      
240-691 1   071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-691 2 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      

<< 1 2 3 4 5 6 >>

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.