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: CKVLTNXADS0

Remotes:

Switch Switch name Switch type
ALGDTNXARS0  ALGOOD  RSC 
MTRYTNXARS0  MONTEREY  RSC 
SPRTTNXARS0  SPARTA  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
931-372 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      
931-520 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      
931-525 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      
931-526 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      
931-528 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      
931-646 A Cookeville TN 4336 CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC 470      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.