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.

Williamsville, VA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
540-916 A RONKVALKXJY  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 244      
540-916 2 RONKVALKXJY  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 244   2019-02-09   
540-925 A WSVLVAXARS0  0238 MGW TELEPHONE COMPANY, INC. 244      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.