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: WILSTXXADS0

Remotes:

Switch Switch name Switch type
NWWVTXXARS0  NEW WAVERLY  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-228 A Willis EMS TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
936-228 0 Willis EMS TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
936-228 5 Willis EMS TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560   2003-03-17   
936-856 A Willis TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
936-890 A Willis TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.