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: KYSTIAXODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-439 A Elberon IA 1217 KEYSTONE FARMS COOP. TEL. CO. 635      
319-442 A Keystone IA 1217 KEYSTONE FARMS COOP. TEL. CO. 635      
319-477 A Garrison IA 1217 KEYSTONE FARMS COOP. TEL. CO. 635      

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.