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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
301-542 3 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-06-02   
301-542 4 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-07-03   
301-542 5 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-06-27   
301-542 6 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-11-15   
301-542 7 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-06-02   
301-542 8 Waldorf MD   829J PAETEC ITEL, LLC 236   2004-03-27   
301-542 9 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
301-543 A Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 0 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-07-22   
301-543 1 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 2 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 3 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 4 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 5 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 6 Laurel MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 7 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2015-11-19   
301-543 8 Laurel MD   829J PAETEC ITEL, LLC 236   2005-04-21   
301-543 9 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2015-11-19   
301-544 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 0 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 1 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 2 Washington Zone 10 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2017-08-17   
301-545 3 Washington Zone 10 MD WASHDC126MD  964H BARR TELL USA, INC. 236   2018-05-08   
301-545 4 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 5 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 6 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 7 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 8 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-545 9 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-546 A Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-546 0 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 1 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 2 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 3 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 4 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 5 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 6 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 7 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 8 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-546 9 Washington Zone 4 MD   9212 VERIZON MARYLAND, INC. 236   2014-06-06   
301-547 A Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 0 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 1 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2008-03-11   
301-547 2 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 3 Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-06-04   
301-547 4 Washington Zone 2 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 5 Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-01-11   
301-547 6 Washington Zone 2 MD CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
301-547 7 Washington Zone 2 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-12-03   

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

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