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: 381

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-381 A Iowa City IA CDRRIADTXCX  495J STRATUS NETWORKS 635   2021-02-19   
319-381 1 Iowa City IA CDRRIADTXCX  495J STRATUS NETWORKS 635   2021-02-19   
319-381 2 Iowa City IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2021-12-06   
319-381 3 Iowa City IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2021-07-22   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.