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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
301-732 0 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2014-12-01   
301-732 1 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2013-06-14   
301-732 2 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2013-08-01   
301-732 3 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2014-12-23   
301-732 4 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2015-08-11   
301-732 5 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2011-12-04   
301-732 6 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2013-09-18   
301-732 7 Frederick MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-05-21   
301-732 8 Frederick MD FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2015-07-21   
301-732 9 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2014-10-10   
301-733 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-734 A Washington Zone 3 MD SLSPMDSSDSS  9212 VERIZON MARYLAND, INC. 236      
301-735 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-736 A Washington Zone 5 MD STLDMDSLDS0  9212 VERIZON MARYLAND, INC. 236      
301-737 A Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236      
301-738 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-739 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-740 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-740 0 Gaithersburg MD BTVLMD12CMA  5562 METROPCS, INC. 236   2004-11-29   
301-740 1 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2004-07-02   
301-740 2 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2004-07-02   
301-740 3 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2004-07-02   
301-740 4 Gaithersburg MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-04-07   
301-740 5 Gaithersburg MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-05   
301-740 6 Gaithersburg MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2011-09-02   
301-740 7 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2006-03-30   
301-740 8 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2006-03-30   
301-740 9 Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236   2006-03-30   
301-741 A Laurel MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-741 0 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 1 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 2 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 3 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 4 Laurel MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-741 5 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 6 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-08-01   
301-741 7 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-09-20   
301-741 8 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-09-20   
301-741 9 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-09-20   
301-742 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-743 A Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 0 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-01-06   
301-743 1 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-08-21   
301-743 2 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 3 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 4 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 5 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 6 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 7 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 8 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-743 9 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 A Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 0 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-01   
301-744 1 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 2 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 3 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 4 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 5 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 6 Indian Head MD INHDMDINRS0  9212 VERIZON MARYLAND, INC. 236      
301-744 7 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-06-02   
301-744 8 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-19   
301-744 9 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-01-02   
301-745 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 0 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 1 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 2 Hagerstown MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2016-04-16   
301-745 3 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 4 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 5 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 6 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 7 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 8 Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
301-745 9 Hagerstown MD   876D ONVOY, LLC - MD 240   2025-05-03   
301-746 A Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 0 Friendsville MD HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
301-746 1 Friendsville MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2018-08-18   
301-746 2 Friendsville MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2017-06-21   
301-746 3 Friendsville MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2017-01-07   
301-746 4 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 5 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 6 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 7 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 8 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-746 9 Friendsville MD FIVLMDFRRS0  9212 VERIZON MARYLAND, INC. 240      
301-747 A Washington Zone 6 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-747 0 Washington Zone 6 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2015-06-06   
301-747 1 Washington Zone 6 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
301-747 2 Washington Zone 6 MD   515J IP HORIZON LLC 236   2016-05-31   
301-747 3 Washington Zone 6 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-11-29   
301-747 4 Washington Zone 6 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2015-10-02   
301-747 5 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-06-16   
301-747 6 Washington Zone 6 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
301-747 7 Washington Zone 6 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
301-747 8 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-02-07   
301-747 9 Washington Zone 6 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-748 A Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2024-02-09   
301-748 0 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-748 1 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 2 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
301-748 3 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240      

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

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