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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
301-684 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 6 Washington Zone 6 MD   876D ONVOY, LLC - MD 236   2026-06-13   
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      
301-687 4 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 5 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 6 Frostburg MD FRDRMDFRX7X  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240      
301-687 7 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 8 Frostburg MD   876D ONVOY, LLC - MD 240   2004-02-15   
301-688 A Washington Zone 13 MD LARLMDDYDS0  9212 VERIZON MARYLAND, INC. 236      
301-689 A Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 0 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 1 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 2 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 3 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 4 Frostburg MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-689 5 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 6 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 7 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 8 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 9 Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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