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: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-657 A Ainsworth IA ANWOIAXORS1  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-657 0 Ainsworth IA DVNPIA80X8X  444G AUREON COMMUNICATIONS, LLC 634   2021-10-18   
319-657 1 Ainsworth IA ANWOIAXORP0  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-657 2 Ainsworth IA ANWOIAXORS1  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-657 3 Ainsworth IA ANWOIAXORS1  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-657 4 Ainsworth IA ANWOIAXORS1  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 634      
319-657 5 Ainsworth IA DVNPIADTGMD  221F ONVOY, LLC - IA 634   2020-06-27   
319-657 6 Ainsworth IA MNPLIAXCGMD  624H ONVOY SPECTRUM, LLC 634   2024-12-19   
319-657 7 Ainsworth IA DVNPIAEA9MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634   2016-10-13   
319-657 8 Ainsworth IA DVNPIADTGMD  221F ONVOY, LLC - IA 634   2021-03-13   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.