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: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-501 A Montezuma IA MTZMIAXOPS0  1248 WINDSTREAM MONTEZUMA, LLC 632      
641-501 6 Montezuma IA OSKLIA14DS0  916A MAHASKA COMMUNICATION GROUP, LLC - IA 632   2019-01-16   
641-501 7 Montezuma IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2023-11-05   
641-501 8 Montezuma IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-08-20   
641-501 9 Montezuma IA MTZMIAXOPS0  1248 WINDSTREAM MONTEZUMA, LLC 632   2018-08-20   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.