Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 276 [Rate centres in NPA 276] [Dial plan for NPA 276]

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
276-343 A Big Stone Gap VA RONKVALKX1Z  138E ONVOY, LLC - VA 244   2025-05-11   
276-343 0 Big Stone Gap VA RONKVALKX1Z  138E ONVOY, LLC - VA 244   2025-05-11   
276-343 1 Big Stone Gap VA   138E ONVOY, LLC - VA 244   2026-07-24   
276-343 3 Big Stone Gap VA   145J TERRA NOVA TELECOM INC. 244   2025-07-10   
276-343 8 Big Stone Gap VA   138E ONVOY, LLC - VA 244   2026-08-23   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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