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: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-289 A Lamoni IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-289 0 Lamoni IA   6266 UNITED STATES CELLULAR - IA 632   2009-08-02   
641-289 1 Lamoni IA   751F MCC TELEPHONY OF IOWA, LLC - IA 632   2010-04-15   
641-289 2 Lamoni IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-15   
641-289 3 Lamoni IA   6266 UNITED STATES CELLULAR - IA 632   2021-01-17   
641-289 4 Lamoni IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2022-05-12   
641-289 5 Lamoni IA   6529 T-MOBILE USA, INC. 632   2024-08-15   
641-289 8 Lamoni IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2020-10-16   
641-289 9 Lamoni IA   5562 METROPCS, INC. 632   2018-07-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.