Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 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      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.