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: 540 [Rate centres in NPA 540] [Dial plan for NPA 540]

NXX: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
540-258 A Glasgow VA GLSGVAXARS0  0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 0 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 1 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 2 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 3 Glasgow VA   318J COMCAST IP PHONE, LLC 244   2012-05-15   
540-258 4 Glasgow VA   138E ONVOY, LLC - VA 244   2018-10-10   
540-258 5 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 6 Glasgow VA   138E ONVOY, LLC - VA 244   2022-12-30   
540-258 7 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 8 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      
540-258 9 Glasgow VA   0254 BRIGHTSPEED OF VIRGINIA, LLC 244      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.