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: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 672

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-672 A Oskaloosa IA OSKLIACODS1  9631 QWEST CORPORATION 632      
641-672 0 Oskaloosa IA   9631 QWEST CORPORATION 632      
641-672 1 Oskaloosa IA   9631 QWEST CORPORATION 632      
641-672 2 Oskaloosa IA   9631 QWEST CORPORATION 632      
641-672 3 Oskaloosa IA   9631 QWEST CORPORATION 632      
641-672 4 Oskaloosa IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2016-08-15   
641-672 5 Oskaloosa IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-16   
641-672 6 Oskaloosa IA   508J CENTURYLINK COMMUNICATIONS, LLC 632   2017-03-25   
641-672 7 Oskaloosa IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2013-08-16   
641-672 8 Oskaloosa IA   9631 QWEST CORPORATION 632      
641-672 9 Oskaloosa IA   9631 QWEST CORPORATION 632      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.