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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
301-715 0 Washington Zone 15 MD   515J IP HORIZON LLC 236   2019-04-26   
301-715 1 Washington Zone 15 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-715 2 Washington Zone 15 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-715 3 Washington Zone 15 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2009-10-09   
301-715 4 Washington Zone 15 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-715 5 Washington Zone 15 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-715 6 Washington Zone 15 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-715 7 Washington Zone 15 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2022-06-14   
301-715 8 Washington Zone 15 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2016-11-19   
301-715 9 Washington Zone 15 MD   515J IP HORIZON LLC 236   2019-04-26   
301-716 A Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-717 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-718 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-719 A Washington Zone 16 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-719 0 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-719 1 Washington Zone 16 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-719 2 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
301-719 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
301-719 4 Washington Zone 16 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-05-22   
301-719 5 Washington Zone 16 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-04-15   
301-719 6 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-719 7 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-719 8 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-719 9 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-720 A Brandywine MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-720 0 Brandywine MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-720 1 Brandywine MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-720 2 Brandywine MD BTVLMD12CMA  5562 METROPCS, INC. 236   2019-07-11   
301-720 3 Brandywine MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-720 4 Brandywine MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-720 5 Brandywine MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-720 6 Brandywine MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-720 7 Brandywine MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-720 8 Brandywine MD WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
301-720 9 Brandywine MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-721 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-722 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 0 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2005-07-22   
301-723 1 Cumberland MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2018-05-29   
301-723 2 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 3 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 4 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 5 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 6 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 7 Cumberland MD FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2006-07-01   
301-723 8 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-723 9 Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-724 A Cumberland MD CMLDMDCMDS0  9212 VERIZON MARYLAND, INC. 240      
301-725 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      

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

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