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.

OCN: 2342 CITIZENS TELECOM DBA FRONTIER COMM OF TOULUMNE

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
209-928 A Tuolumne CA TLMNCAXFDS0  738      
530-472 A Oak Run CA OKRNCAXFDS0  724      
530-474 A Shingletown CA SHTNCAXFDS0  724      

Last updated: Fri, 23 Jul 2021 12:43:22 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.