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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
301-883 1 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-26   
301-883 2 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 3 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 4 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 5 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 6 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 7 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 8 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-883 9 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-884 A Mechanicsville MD MCHVMDMCRS1  9212 VERIZON MARYLAND, INC. 236      
301-885 A Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 0 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 1 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 2 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 3 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-885 4 Waldorf MD LARLMDLR3MD  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 236   2003-12-25   
301-885 5 Waldorf MD LARLMDCCDS0  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236   2004-04-06   
301-885 6 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-11-02   
301-885 7 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-11-02   
301-885 8 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-01-02   
301-885 9 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-12-02   
301-886 A Washington Zone 13 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-886 0 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   
301-886 1 Washington Zone 13 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2025-05-16   
301-886 2 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 3 Washington Zone 13 MD CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2006-05-05   
301-886 4 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 5 Washington Zone 13 MD   876D ONVOY, LLC - MD 236   2025-08-09   
301-886 6 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-886 8 Washington Zone 13 MD   829J PAETEC ITEL, LLC 236   2003-04-06   
301-886 9 Washington Zone 13 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-08-09   
301-887 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 0 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 1 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 2 Washington Zone 4 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-887 3 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-887 4 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 5 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-887 6 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 7 Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2012-06-16   
301-887 8 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-887 9 Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-888 A Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 0 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-07-19   
301-888 1 Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 2 Washington Zone 16 MD BADNMDBNRS0  9212 VERIZON MARYLAND, INC. 236      
301-888 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-08-13   
301-888 4 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2017-07-28   
301-888 5 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   

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

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