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: VTVLCAXAXPX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-228 A Bishop CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 730      
442-326 A Independence CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 730      
760-627 A Earp: Earp DA CA 388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 730      
928-264 A Ehrenberg AZ 227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 730      
928-575 A Parker AZ 227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 730      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.