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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
301-426 9 Washington Zone 13 MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
301-427 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-428 A Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-429 A Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 A Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 0 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 1 Washington Zone 14 MD   515J IP HORIZON LLC 236   2016-05-31   
301-430 2 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 3 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-430 4 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-430 5 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 6 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 7 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 8 Washington Zone 14 MD UPMRMDCCDS0  9212 VERIZON MARYLAND, INC. 236      
301-430 9 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-431 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-432 A Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 0 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 1 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 2 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 3 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 4 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 5 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 6 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 7 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 8 Keedysville MD KDVLMDKVRS0  9212 VERIZON MARYLAND, INC. 240      
301-432 9 Keedysville MD MRBGWVBUHPA  4095 FIBERNET, LLC - WV 240   2004-02-15   
301-433 A Washington Zone 5 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-433 0 Washington Zone 5 MD ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-433 1 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-01-12   
301-433 2 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-06-16   
301-433 3 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-06-16   
301-433 4 Washington Zone 5 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-433 5 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-04-13   
301-433 6 Washington Zone 5 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-433 7 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
301-433 8 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2015-08-17   
301-433 9 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2019-11-29   
301-434 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-435 A Washington Zone 2 MD BTHSMDRPDS0  9212 VERIZON MARYLAND, INC. 236      
301-436 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-437 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 1 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 2 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-437 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-438 A Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 0 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 1 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 2 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 3 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 4 Washington Zone 12 MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-25   
301-438 5 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 6 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 7 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 8 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-438 9 Washington Zone 12 MD SLSPMDNBDS0  9212 VERIZON MARYLAND, INC. 236      
301-439 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-440 A Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 0 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 1 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 2 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 3 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 4 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 5 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 6 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 7 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 8 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-440 9 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
301-441 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-442 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 1 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 2 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-442 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-443 A Washington Zone 11 MD RKVLMDMRRS1  9212 VERIZON MARYLAND, INC. 236      
301-444 A Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 0 Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 1 Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 2 Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 3 Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 4 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236   2007-02-06   
301-444 5 Washington Zone 10 MD   515J IP HORIZON LLC 236   2007-09-13   
301-444 6 Washington Zone 10 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-03-18   
301-444 7 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2004-06-10   
301-444 8 Washington Zone 10 MD GMTWMDGNDS0  9212 VERIZON MARYLAND, INC. 236      
301-444 9 Washington Zone 10 MD WASHDC127MD  073H TELNYX LLC 236   2020-01-28   
301-445 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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