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: OKLDIAXADS0

Remotes:

Switch Switch name Switch type
CRSNIAXORS4  CARSON  1RE 
TRYNIAXORS4  TREYNOR  1RE 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-482 A Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 0 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 3 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 4 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 5 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 6 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 8 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-482 9 Oakland IA 1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.