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: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-398 A Onawa IA SXCYIADTX0X  495J STRATUS NETWORKS 630      
712-398 0 Onawa IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630   2024-09-12   
712-398 1 Onawa IA SXCYIADTX0X  495J STRATUS NETWORKS 630   2021-02-07   
712-398 8 Onawa IA SXCYIADT9MD  221F ONVOY, LLC - IA 630   2021-09-16   
712-398 9 Onawa IA SXCYIA791MD  939H COMMIO, LLC 630   2022-09-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.