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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-748 4 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 5 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 6 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 7 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 8 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 9 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-749 A Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-750 A Friendsville MD HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
301-750 0 Friendsville MD FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2004-05-09   
301-750 1 Friendsville MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-29   
301-750 2 Friendsville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-02-05   
301-750 3 Friendsville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-10-04   
301-750 4 Friendsville MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2013-05-23   
301-750 5 Friendsville MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2007-08-31   
301-750 6 Friendsville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-02-13   
301-750 7 Friendsville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-08-10   
301-750 8 Friendsville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-11-07   
301-750 9 Friendsville MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-29   
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      
301-753 0 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2023-09-29   
301-753 1 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-753 2 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-753 3 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-12-03   
301-753 4 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-753 5 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-753 6 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-753 7 Washington Zone 6 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2017-04-14   
301-753 8 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-12-03   
301-753 9 Washington Zone 6 MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-754 A Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 0 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 1 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 2 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 3 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 4 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 5 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 6 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-10-23   
301-754 7 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 8 Washington Zone 3 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-754 9 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      
301-755 0 Washington Zone 3 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 1 Washington Zone 3 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 2 Washington Zone 3 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-09-30   
301-755 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-09-17   
301-755 5 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2008-07-19   
301-755 6 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2008-07-19   
301-755 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-07-29   
301-755 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-10-12   
301-755 9 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-10-26   
301-756 A Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 0 Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 1 Washington Zone 14 MD WASHDC127MD  073H TELNYX LLC 236   2017-03-14   
301-756 2 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-756 3 Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 4 Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 5 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
301-756 6 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2017-08-04   
301-756 7 Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 8 Washington Zone 14 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-756 9 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      
301-760 0 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-12-23   
301-760 1 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236   2004-07-08   
301-760 2 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-07-03   
301-760 3 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-02-14   
301-760 4 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-760 5 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236   2004-08-10   
301-760 6 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-12-23   
301-760 7 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-02-14   
301-760 8 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-09-13   
301-760 9 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-09-13   
301-761 A Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-761 0 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
301-761 1 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-761 2 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-04-19   
301-761 3 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-761 4 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-761 5 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-02-21   
301-761 6 Washington Zone 11 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-11-22   
301-761 7 Washington Zone 11 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-10-23   
301-761 8 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-02-23   
301-761 9 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
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      
301-764 0 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-07-30   
301-764 1 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-764 2 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-764 3 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-764 4 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-764 5 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-764 6 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-764 7 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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