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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
301-875 2 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-01-02   
301-875 3 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-05-02   
301-875 4 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-05-02   
301-875 5 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 6 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 7 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 8 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 9 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-876 A Cumberland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-876 0 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 1 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 2 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 3 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 4 Cumberland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2002-07-27   
301-876 5 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-08-23   
301-876 6 Cumberland MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-12-09   
301-876 7 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-09-06   
301-876 8 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-08-23   
301-876 9 Cumberland MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2004-01-25   
301-877 A Washington Zone 16 MD CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      
301-878 A Baltimore MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
301-879 A Washington Zone 12 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-880 A Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-880 0 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-880 1 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-880 2 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236   2005-09-01   
301-880 3 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2005-04-05   
301-880 4 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-880 5 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2005-10-07   
301-880 6 Lexington Park-Great Mills MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-10-25   
301-880 7 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2007-12-14   
301-880 8 Lexington Park-Great Mills MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
301-880 9 Lexington Park-Great Mills MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-881 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-882 A New Market MD HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
301-882 0 New Market MD FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2004-05-09   
301-882 1 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-06-26   
301-882 2 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-10-17   
301-882 3 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-07-02   
301-882 4 New Market MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2013-08-16   
301-882 5 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-09-08   
301-882 6 New Market MD   829J PAETEC ITEL, LLC 240   2014-10-03   
301-882 7 New Market MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2007-04-07   
301-882 8 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-02-13   
301-882 9 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-29   
301-883 A Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 0 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 1 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-26   
301-883 2 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 3 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 4 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 5 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 6 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 7 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 8 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 9 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-884 A Mechanicsville MD MCHVMDMCRS1  9212 VERIZON MARYLAND, INC. 236      
301-885 A Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 0 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 1 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 2 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 3 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 4 Waldorf MD LARLMDLR3MD  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 236   2003-12-25   
301-885 5 Waldorf MD LARLMDCCDS0  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236   2004-04-06   
301-885 6 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-11-02   
301-885 7 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-11-02   
301-885 8 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-01-02   
301-885 9 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-12-02   
301-886 A Washington Zone 13 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-886 0 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
301-886 1 Washington Zone 13 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2025-05-16   
301-886 2 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 3 Washington Zone 13 MD CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2006-05-05   
301-886 4 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 5 Washington Zone 13 MD   876D ONVOY, LLC - MD 236   2025-08-09   
301-886 6 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 8 Washington Zone 13 MD   829J PAETEC ITEL, LLC 236   2003-04-06   
301-886 9 Washington Zone 13 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-08-09   
301-887 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 0 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 1 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 2 Washington Zone 4 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-887 3 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-887 4 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 5 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-887 6 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 7 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-06-16   
301-887 8 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 9 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-888 A Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 0 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-07-19   
301-888 1 Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 2 Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-08-13   
301-888 4 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-07-28   
301-888 5 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   
301-888 6 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   
301-888 7 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-07-28   
301-888 8 Washington Zone 16 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2012-04-02   

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

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