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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
301-918 0 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 1 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 2 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 3 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 4 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 5 Washington Zone 4 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
301-918 6 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 7 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 8 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-918 9 Washington Zone 4 MD LNHMMDLNDS0  9212 VERIZON MARYLAND, INC. 236      
301-919 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-920 A Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 0 Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 1 Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 2 Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 3 Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-03   
301-920 5 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2008-12-01   
301-920 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-03   
301-920 7 Washington Zone 3 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-20   
301-920 8 Washington Zone 3 MD LNHMMDADGT0  8832 STARPOWER COMMUNICATIONS, LLC - MD 236      
301-920 9 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2004-03-02   
301-921 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 0 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 1 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 2 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 3 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 4 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 5 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-09-20   
301-921 6 Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-11-24   
301-921 7 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 8 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-921 9 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-922 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-923 A Washington Zone 13 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-923 0 Washington Zone 13 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2024-12-08   
301-923 1 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-12-14   
301-923 2 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-923 3 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-923 4 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
301-923 5 Washington Zone 13 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2020-10-05   
301-923 6 Washington Zone 13 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2025-01-04   
301-923 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-923 8 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-923 9 Washington Zone 13 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
301-924 A Washington Zone 12 MD OLNYMDOKRP0  9212 VERIZON MARYLAND, INC. 236      
301-925 A Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-926 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-927 A Washington Zone 4 MD HYVLMDHYDS0  9212 VERIZON MARYLAND, INC. 236      
301-928 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-929 A Washington Zone 11 MD WHTNMDWTDS0  9212 VERIZON MARYLAND, INC. 236      
301-930 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 A Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 0 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 1 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 2 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 3 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 4 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 5 Washington Zone 13 MD   829J PAETEC ITEL, LLC 236   2014-06-09   
301-931 6 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 7 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 8 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-931 9 Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-932 A Waldorf MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-933 A Washington Zone 11 MD WHTNMDWTDS0  9212 VERIZON MARYLAND, INC. 236      
301-934 A La Plata MD LPLTMDLADS0  9212 VERIZON MARYLAND, INC. 236      
301-935 A Washington Zone 13 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-935 0 Washington Zone 13 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-935 1 Washington Zone 13 MD   876D ONVOY, LLC - MD 236   2025-04-06   
301-935 2 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-935 3 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-935 4 Washington Zone 13 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-935 5 Washington Zone 13 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-935 6 Washington Zone 13 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-935 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-935 8 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-935 9 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-936 A Hagerstown MD HGTWMD530MD  073H TELNYX LLC 240      
301-936 0 Hagerstown MD CMLDMDCMUMD  073H TELNYX LLC 240   2021-07-23   
301-936 1 Hagerstown MD HGTWMD530MD  073H TELNYX LLC 240   2017-07-17   
301-936 2 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-03-29   
301-936 3 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-936 4 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-936 5 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2020-07-13   
301-936 6 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-936 7 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-936 8 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-936 9 Hagerstown MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2019-04-12   
301-937 A Washington Zone 13 MD BTVLMDBVDS0  9212 VERIZON MARYLAND, INC. 236      
301-938 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-939 A Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 0 Washington Zone 13 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-04-19   
301-939 1 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 2 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 3 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 4 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 5 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 6 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 7 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-939 8 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   

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

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