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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
301-842 2 Clear Spring MD CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 3 Clear Spring MD CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 4 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2008-12-04   
301-842 5 Clear Spring MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2009-12-31   
301-842 6 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-03-25   
301-842 7 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-01-02   
301-842 8 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-06-01   
301-842 9 Clear Spring MD HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
301-843 A Washington Zone 6 MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-844 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-844 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-11-18   
301-844 1 Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-09-12   
301-844 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2012-12-02   
301-844 5 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-07-21   
301-844 6 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-06-21   
301-844 7 Washington Zone 3 MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
301-844 8 Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-09-12   
301-844 9 Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-10-04   
301-845 A Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 0 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 1 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 2 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 3 Walkersville MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-845 4 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 5 Walkersville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-06-06   
301-845 6 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 7 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 8 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-845 9 Walkersville MD WLVLMDWLDS0  9212 VERIZON MARYLAND, INC. 240      
301-846 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 0 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 1 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 2 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 3 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 4 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 5 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 6 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 7 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-846 8 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2015-10-01   
301-846 9 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-847 A Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 0 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 1 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 2 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 3 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 4 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 5 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 6 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 7 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 8 Washington Zone 12 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-847 9 Washington Zone 12 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-10-03   
301-848 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-849 A Oakland MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240      
301-850 A Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-850 0 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-04-27   
301-850 1 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-19   
301-850 2 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-19   
301-850 3 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-04-19   
301-850 4 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2002-06-04   
301-850 5 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-10-04   
301-850 6 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-04-21   
301-850 7 Washington Zone 14 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-08-10   
301-850 8 Washington Zone 14 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-02-04   
301-850 9 Washington Zone 14 MD   829J PAETEC ITEL, LLC 236   2004-03-27   
301-851 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-851 0 Washington Zone 4 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-08-29   
301-851 1 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-10-10   
301-851 2 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-851 3 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-851 4 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-851 5 Washington Zone 4 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-12-12   
301-851 6 Washington Zone 4 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-02-29   
301-851 7 Washington Zone 4 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-851 8 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-851 9 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-10-10   
301-852 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-852 0 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2010-02-06   
301-852 1 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2010-06-03   
301-852 2 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-852 3 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-04-14   
301-852 4 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-10-12   
301-852 5 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-852 6 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-852 7 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-852 8 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-19   
301-852 9 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-19   
301-853 A Washington Zone 4 MD HYVLMDCMDS0  9212 VERIZON MARYLAND, INC. 236      
301-854 A Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238   2024-01-30   
301-854 0 Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
301-854 1 Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
301-854 2 Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
301-854 3 Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
301-854 4 Ashton (Baltimore LATA) MD GLWDMDGDRS1  9212 VERIZON MARYLAND, INC. 238      
301-854 5 Ashton (Baltimore LATA) MD GLWDMDGDRS1  9212 VERIZON MARYLAND, INC. 238      
301-854 6 Ashton (Baltimore LATA) MD GLWDMDGDRS1  9212 VERIZON MARYLAND, INC. 238      
301-854 7 Ashton (Baltimore LATA) MD GLWDMDGDRS1  9212 VERIZON MARYLAND, INC. 238      
301-854 8 Ashton (Baltimore LATA) MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
301-854 9 Ashton (Baltimore LATA) MD CLVLMDCERP0  9212 VERIZON MARYLAND, INC. 238      
301-855 A Washington Zone 15 (Baltimore LATA) MD NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
301-856 A Washington Zone 16 MD CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      

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

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