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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
301-450 4 Washington Zone 3 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-09-17   
301-450 5 Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-17   
301-450 6 Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-17   
301-450 7 Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-17   
301-450 8 Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-09-17   
301-450 9 Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2022-09-16   
301-451 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-452 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-453 A Kitzmiller MD KTZMMDKMRS0  9212 VERIZON MARYLAND, INC. 240      
301-453 0 Kitzmiller MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-453 1 Kitzmiller MD CMLDMDCM2MD  836G SHENTEL COMMUNICATIONS, LLC. - MD 240   2012-07-14   
301-453 2 Kitzmiller MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-10-01   
301-453 3 Kitzmiller MD KTZMMDKMRS0  9212 VERIZON MARYLAND, INC. 240      
301-453 4 Kitzmiller MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-453 5 Kitzmiller MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-07-12   
301-453 6 Kitzmiller MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-08-10   
301-453 7 Kitzmiller MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-11-07   
301-453 8 Kitzmiller MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-453 9 Kitzmiller MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-11-12   
301-454 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 0 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 1 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 2 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 3 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 4 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 5 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 6 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 7 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 8 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 9 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-12-09   
301-455 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 1 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 2 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-455 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-456 A Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-456 0 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-456 1 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-456 2 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-456 3 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-10-01   
301-456 4 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-06-16   
301-456 5 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-06-16   
301-456 6 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-12-15   
301-456 7 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2013-06-05   

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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