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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
301-682 8 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-682 9 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-683 A Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 0 Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 1 Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 2 Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 3 Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 4 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-12-13   
301-683 5 Washington Zone 4 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
301-683 6 Washington Zone 4 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 7 Washington Zone 4 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-18   
301-683 8 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-18   
301-683 9 Washington Zone 4 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
301-684 A Indian Head MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-684 0 Indian Head MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-11-16   
301-684 1 Indian Head MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-684 2 Indian Head MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-09-20   
301-684 3 Indian Head MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-684 4 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
301-684 5 Indian Head MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2011-03-14   
301-684 6 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-09-13   
301-684 7 Indian Head MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-684 8 Indian Head MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-14   
301-684 9 Indian Head MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-685 A Damascus MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-685 0 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-06   
301-685 1 Damascus MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-03-24   
301-685 2 Damascus MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-685 3 Damascus MD   829J PAETEC ITEL, LLC 236   2004-09-28   
301-685 4 Damascus MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-685 5 Damascus MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
301-685 6 Damascus MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
301-685 7 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-11   
301-685 8 Damascus MD LARLMDLR3MD  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 236   2003-12-25   
301-685 9 Damascus MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-686 A Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-686 0 Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-686 1 Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-686 2 Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236   2005-09-29   
301-686 3 Washington Zone 6 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-01   
301-686 4 Washington Zone 6 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-10-12   
301-686 5 Washington Zone 6 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-28   
301-686 7 Washington Zone 6 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
301-686 8 Washington Zone 6 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-08-28   
301-686 9 Washington Zone 6 MD OXHLMDOHDS0  9212 VERIZON MARYLAND, INC. 236      
301-687 A Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 0 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 1 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 2 Frostburg MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-26   
301-687 3 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      

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

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