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.

NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 712

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-712 A Walker IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-08-06   
319-712 0 Walker IA CDRRIAAXQMD  444G AUREON COMMUNICATIONS, LLC 635   2024-10-14   
319-712 7 Walker IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-08-06   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.