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Washington Zone 4, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
301-364 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-06-20   
301-364 1 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-364 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-06-03   
301-364 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
301-364 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-10-14   
301-364 5   829J PAETEC ITEL, LLC 236   2005-12-07   
301-364 6 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-06-03   
301-364 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-07-14   
301-364 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-07-14   
301-364 9 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-386 A LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-403 A HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-405 A   829J PAETEC ITEL, LLC 236   2025-04-02   
301-422 A HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-429 A LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-436 A HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 A HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 0 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 1 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 2 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 3 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 4 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 5 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 6 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 7 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 8 HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-454 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-12-09   
301-458 A WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-458 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
301-458 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-09-05   
301-458 2 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-458 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-02-29   
301-458 4 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-458 5 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2013-05-15   
301-458 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
301-458 7 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-458 8 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
301-458 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-12-13   
301-459 A LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-484 A ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-531 A LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 0 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2012-03-25   
301-531 1 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 2 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 3 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
301-531 5 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
301-531 6 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 7 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-531 8 LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      

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

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