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.
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NPA: 276 [Rate centres in NPA 276] [Dial plan for NPA 276]

NXX: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
276-305 A Big Stone Gap VA RONKVALKX1Z  138E ONVOY, LLC - VA 244      
276-305 0 Big Stone Gap VA   515J IP HORIZON LLC 244   2024-02-05   
276-305 1 Big Stone Gap VA   515J IP HORIZON LLC 244   2024-02-05   
276-305 3 Big Stone Gap VA RONKVALKX1Z  138E ONVOY, LLC - VA 244   2023-09-16   
276-305 8 Big Stone Gap VA   138E ONVOY, LLC - VA 244   2024-04-26   

Last updated: Sat, 01 Jun 2024 11:59:14 UTC

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