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: LPCYIAXODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-342 A La Porte City IA 1220 LA PORTE CITY TELEPHONE COMPANY 635      
319-475 A Mount Auburn IA 1220 LA PORTE CITY TELEPHONE COMPANY 635      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.