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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
301-857 A Clear Spring MD HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
301-857 0 Clear Spring MD FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2002-09-10   
301-857 1 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-10-06   
301-857 2 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-10-20   
301-857 3 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-29   
301-857 4 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-857 5 Clear Spring MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-857 6 Clear Spring MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-10-26   
301-857 7 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-05-17   
301-857 8 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2006-08-22   
301-857 9 Clear Spring MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-05-17   
301-858 A Washington Zone 14 (Baltimore LATA) MD COTNMDCRDS0  9212 VERIZON MARYLAND, INC. 238      
301-859 A Oakland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-859 0 Oakland MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2004-11-27   
301-859 1 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-05-02   
301-859 2 Oakland MD FRDRMDFRXAX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 240   2019-04-22   
301-859 3 Oakland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2002-03-10   
301-859 4 Oakland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2004-05-27   
301-859 5 Oakland MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2019-01-04   
301-859 6 Oakland MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-01-06   
301-859 7 Oakland MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-01-06   
301-859 8 Oakland MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2009-10-29   
301-859 9 Oakland MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-05-02   
301-860 A Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 0 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 1 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 2 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2016-12-25   
301-860 3 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 4 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 5 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 6 Washington Zone 14 MD BOWIMDBODS0  9212 VERIZON MARYLAND, INC. 236      
301-860 7 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2015-02-05   
301-860 8 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-860 9 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2018-04-16   
301-861 A Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-861 0 Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-02-20   
301-861 1 Waldorf MD   829J PAETEC ITEL, LLC 236   2005-10-07   
301-861 2 Waldorf MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-01   
301-861 3 Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-10-10   
301-861 4 Waldorf MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-861 5 Waldorf MD   829J PAETEC ITEL, LLC 236   2005-03-17   
301-861 6 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-07-02   
301-861 7 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-08-02   
301-861 8 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-09-01   
301-861 9 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-05-03   
301-862 A Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 0 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 1 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 2 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 3 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 4 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 5 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 6 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-02-01   
301-862 7 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 8 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-862 9 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-863 A Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-864 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-865 A New Market MD NWMRMDNERS3  9212 VERIZON MARYLAND, INC. 240      
301-866 A Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 0 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 1 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 2 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 3 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 4 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 5 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 6 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-866 7 Lexington Park-Great Mills MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-866 9 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-867 A Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 0 Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 1 Washington Zone 14 MD OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2020-08-10   
301-867 2 Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 3 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-867 4 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-867 5 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
301-867 6 Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 7 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
301-867 8 Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-867 9 Washington Zone 14 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-868 A Washington Zone 16 MD CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      
301-869 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-870 A Washington Zone 6 MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-871 A Washington Zone 11 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-872 A Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 0 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 1 Ridge MD WASHDC127MD  073H TELNYX LLC 236   2023-06-18   
301-872 2 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 3 Ridge MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-06-17   
301-872 4 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 5 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 6 Ridge MD WASHDC127MD  073H TELNYX LLC 236   2024-02-04   
301-872 7 Ridge MD WASHDC127MD  073H TELNYX LLC 236   2024-02-04   
301-872 8 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 9 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-873 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-874 A Buckeystown MD BCTWMDBTRS1  9212 VERIZON MARYLAND, INC. 240      
301-875 A Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-875 0 Laurel MD CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2004-11-20   
301-875 1 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   

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

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