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: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

Block: A

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-714 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-715 A Washington Zone 15 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-716 A Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-717 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-718 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-719 A Washington Zone 16 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-720 A Brandywine MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-721 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-722 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-724 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-725 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-727 A Washington Zone 5 MD VINNVACB2MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-728 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-729 A Cumberland MD CSTWMDCRDS0  9212 VERIZON MARYLAND, INC. 240      
301-730 A Myersville MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-731 A Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-732 A Frederick MD FRDRMDFR9MD  5562 METRO PCS, INC. 240      
301-733 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-734 A Washington Zone 3 MD SLSPMDSSDSS  9212 VERIZON MARYLAND, INC. 236      
301-735 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-736 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-737 A Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-738 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-739 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-740 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-741 A Laurel MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-742 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-743 A Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 A Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-745 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-746 A Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-747 A Washington Zone 6 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-748 A Frederick MD FRDRMDFRCMD  6664 SPRINT SPECTRUM L.P. 240      
301-749 A Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-750 A Friendsville MD FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC. - MD 240      
301-751 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-752 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-753 A Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-754 A Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-755 A Washington Zone 3 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-756 A Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-757 A Lexington Park-Great Mills MD PNATMDAFDS0  9212 VERIZON MARYLAND, INC. 236      
301-758 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-759 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-760 A Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-761 A Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-762 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-763 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-764 A Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >>

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.