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.

North East, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-287 A NRTEMDNERS0  9212 VERIZON MARYLAND, INC. 238      
410-656 A BLTMMDCH47Z  420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD 238      
410-656 0 BLTMMDCH47Z  420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD 238      
410-656 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-656 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-656 3 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-656 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-656 5 PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238      
410-656 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-656 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
410-656 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
410-656 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-256 A BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-256 0 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-256 1 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-256 2 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-256 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-256 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-256 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-256 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-256 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
443-256 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-256 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-674 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-674 0 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-674 1 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-674 2 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-674 3 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 4   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-674 5   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-674 6 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 7 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 8 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-674 9 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-715 A BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 0 BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-715 3 BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-715 5   145J TERRA NOVA TELECOM INC. 238      
443-715 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-715 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-715 9   145J TERRA NOVA TELECOM INC. 238      
443-877 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 0   145J TERRA NOVA TELECOM INC. 238      
443-877 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 2 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-877 3 BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-877 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-877 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-877 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-877 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-877 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-967 A NRTEMDNERS0  9212 VERIZON MARYLAND, INC. 238      
443-967 0 NRTEMDNERS0  9212 VERIZON MARYLAND, INC. 238      
443-967 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-967 2 BLTMMDCH3MD  228C IDT AMERICA, CORP. - MD 238      
443-967 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-967 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-967 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-967 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-967 7 BLTMMDCHX7X  073H TELNYX LLC 238      
443-967 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-967 9 BLTMMDCHFMD  5562 METROPCS, INC. 238      
667-647 A BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-647 0 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-647 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-647 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-647 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-647 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-647 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.