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: 1259 NORTHERN IOWA TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
507-394 A North Little Rock MN SNBRIAXO1MD  630      
712-479 A Little Rock IA SNBRIAXO1MD  630      
712-567 A Maurice IA SNBRIAXO1MD  630      
712-727 A Granville IA SNBRIAXO1MD  630      
712-729 A Sanborn IA SNBRIAXO1MD  630      
712-738 A Matlock IA SNBRIAXO1MD  630      
712-947 A Hinton IA SNBRIAXO1MD  630      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.