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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
301-939 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 5 MD LDVRMDLORP0  9212 VERIZON MARYLAND, INC. 236      
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      

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

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