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

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
276-257 A Big Stone Gap VA RONKVALKX2Z  318J COMCAST IP PHONE, LLC 244      
276-257 0 Big Stone Gap VA RONKVALKXAX  073H TELNYX LLC 244      
276-257 1 Big Stone Gap VA RONKVALKX2Z  318J COMCAST IP PHONE, LLC 244      
276-257 2 Big Stone Gap VA RONKVALKX2Z  318J COMCAST IP PHONE, LLC 244      
276-257 3 Big Stone Gap VA   515J IP HORIZON LLC 244      
276-257 4 Big Stone Gap VA RONKVAGEDS0  275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 244      
276-257 5 Big Stone Gap VA RONKVAGE3MD  939H COMMIO, LLC 244      
276-257 6 Big Stone Gap VA RONKVALKXGX  624H ONVOY SPECTRUM, LLC 244      
276-257 7 Big Stone Gap VA RONKVALKXGX  624H ONVOY SPECTRUM, LLC 244      
276-257 8 Big Stone Gap VA RONKVALKX1Z  138E ONVOY, LLC - VA 244      
276-257 9 Big Stone Gap VA RONKVAGEDS0  275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 244      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.