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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
301-847 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      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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