Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-689 A Frostburg MD FSBGMDFSDS0  9212 VERIZON MARYLAND, INC. 240      
301-689 0 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 1 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 2 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 3 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 4 Frostburg MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-689 5 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 6 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 7 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 8 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      
301-689 9 Frostburg MD   9212 VERIZON MARYLAND, INC. 240      

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

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