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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-449 2 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-04-23   
240-449 3 Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-05-07   
240-449 4 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-07   
240-449 5 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-449 6 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-449 7 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-449 8 Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-05-07   
240-449 9 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-450 A Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-450 0 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 1 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 2 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
240-450 3 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 4 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 5 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 6 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-450 7 Washington Zone 3 MD WASHDC125MD  197D VONAGE AMERICA LLC 236   2020-05-20   
240-450 8 Washington Zone 3 MD WASHDC125MD  197D VONAGE AMERICA LLC 236   2020-05-20   
240-450 9 Washington Zone 3 MD   829J PAETEC ITEL, LLC 236      
240-451 A Thurmont MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-451 0 Thurmont MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2017-07-31   
240-451 1 Thurmont MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2017-07-31   
240-451 2 Thurmont MD FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240   2018-07-12   
240-451 3 Thurmont MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 4 Thurmont MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 5 Thurmont MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-06-17   
240-451 6 Thurmont MD HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
240-451 7 Thurmont MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-10-28   
240-451 8 Thurmont MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-10-02   
240-451 9 Thurmont MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-10-02   
240-452 A Hagerstown MD HGTWMDHGGMD  7849 LUMOS NETWORKS INC. - VA 240      
240-452 0 Hagerstown MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-06-02   
240-452 1 Hagerstown MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-06-02   
240-452 2 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-04-28   
240-452 3 Hagerstown MD HGTWMDHGGMD  7849 LUMOS NETWORKS INC. - VA 240   2010-09-12   
240-452 4 Hagerstown MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2011-01-07   
240-452 5 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-04-28   
240-452 6 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-04-28   
240-452 7 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-04-28   
240-452 8 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-06-16   
240-452 9 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-06-16   
240-453 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 0 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 1 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2017-01-17   
240-453 2 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 3 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 4 Washington Zone 10 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-27   
240-453 5 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 6 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 7 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 8 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-453 9 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-454 A Gaithersburg MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-454 0 Gaithersburg MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-12-15   
240-454 1 Gaithersburg MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2010-06-15   
240-454 2 Gaithersburg MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-19   
240-454 3 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-07   
240-454 4 Gaithersburg MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-04-01   
240-454 5 Gaithersburg MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-05-07   
240-454 6 Gaithersburg MD   829J PAETEC ITEL, LLC 236   2006-12-21   
240-454 7 Gaithersburg MD   829J PAETEC ITEL, LLC 236   2005-10-05   
240-454 8 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-12   
240-454 9 Gaithersburg MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-12   
240-455 A Washington Zone 5 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-455 0 Washington Zone 5 MD   829J PAETEC ITEL, LLC 236      
240-455 1 Washington Zone 5 MD   829J PAETEC ITEL, LLC 236      
240-455 2 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2004-10-31   
240-455 3 Washington Zone 5 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-07   
240-455 4 Washington Zone 5 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-01-12   
240-455 5 Washington Zone 5 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-07   
240-455 6 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-06-21   
240-455 7 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-06-21   
240-455 8 Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2005-08-12   
240-455 9 Washington Zone 5 MD   829J PAETEC ITEL, LLC 236      
240-456 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 0 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 1 Laurel MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
240-456 2 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 3 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 4 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 5 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 6 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 7 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 8 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 9 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-457 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-457 0 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2008-11-14   
240-457 1 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2010-06-12   
240-457 2 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2011-02-05   
240-457 3 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2011-06-24   
240-457 4 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2011-06-20   
240-457 5 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2011-10-11   
240-457 6 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2011-10-11   
240-457 7 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2009-09-04   
240-457 8 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-09-25   
240-457 9 Frederick MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2009-02-09   
240-458 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-458 0 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2014-07-17   
240-458 1 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-01-11   
240-458 2 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-03-26   

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Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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