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.

Switch: RONKVALKX2Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
276-201 A Martinsville VA 318J COMCAST IP PHONE, LLC 244      
276-257 A Big Stone Gap VA 318J COMCAST IP PHONE, LLC 244      
276-292 A Ridgeway VA 318J COMCAST IP PHONE, LLC 244      
276-318 A Pennington Gap VA 318J COMCAST IP PHONE, LLC 244      
276-325 A Norton VA 318J COMCAST IP PHONE, LLC 244      
276-421 A Bassett VA 318J COMCAST IP PHONE, LLC 244      
276-533 A Wise VA 318J COMCAST IP PHONE, LLC 244      
276-833 A Axton VA 318J COMCAST IP PHONE, LLC 244      
540-400 A Roanoke VA 318J COMCAST IP PHONE, LLC 244      
540-404 A Salem VA 318J COMCAST IP PHONE, LLC 244      
540-902 A Greenwood VA 318J COMCAST IP PHONE, LLC 244      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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