Local Calling Guide

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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-687 A Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-687 0 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 1 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 2 Frostburg MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-26   
301-687 3 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 4 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 5 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 6 Frostburg MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 240      
301-687 7 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-687 8 Frostburg MD   876D ONVOY, LLC - MD 240   2004-02-15   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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