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.

OCN: 1264 OLIN TEL. CO., INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
319-484 A Olin IA OLINIAXORS0  635      
319-489 A Morley IA OLINIAXORS0  635      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.