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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
301-930 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   
301-939 9 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-940 A Washington Zone 4 MD LDVRMDLORP0  9212 VERIZON MARYLAND, INC. 236   2025-02-03   
301-941 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 0 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 1 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 2 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 3 Washington Zone 2 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-10-02   
301-941 4 Washington Zone 2 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-05-06   
301-941 5 Washington Zone 2 MD WASHDC126MD  964H BARR TELL USA, INC. 236   2018-05-08   
301-941 6 Washington Zone 2 MD OCQNVAXAVMD  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2017-10-02   
301-941 7 Washington Zone 2 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2018-10-19   
301-941 8 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-941 9 Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-942 A Washington Zone 11 MD WHTNMDWTDS0  9212 VERIZON MARYLAND, INC. 236      
301-943 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-944 A Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 0 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 1 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 2 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 3 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-05-30   
301-944 4 Gaithersburg MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-06-27   
301-944 5 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 6 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 7 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 8 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-944 9 Gaithersburg MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-945 A Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-945 0 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-945 1 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-945 2 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-945 3 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-05-18   
301-945 4 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-945 5 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-01-25   
301-945 6 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-945 7 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   
301-945 8 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   
301-945 9 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-946 A Washington Zone 11 MD WHTNMDWTDS0  9212 VERIZON MARYLAND, INC. 236      
301-947 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-948 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-949 A Washington Zone 11 MD WHTNMDWTDS0  9212 VERIZON MARYLAND, INC. 236      
301-951 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-952 A Washington Zone 15 MD MRBOMDMBDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 A Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 0 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 1 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 2 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 3 Washington Zone 13 MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-953 4 Washington Zone 13 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-953 5 Washington Zone 13 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-953 6 Washington Zone 13 MD   876D ONVOY, LLC - MD 236   2025-04-06   

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

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