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: 1248 WINDSTREAM MONTEZUMA, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
641-501 A Montezuma IA MTZMIAXOPS0  632      
641-501 9 Montezuma IA MTZMIAXOPS0  632   2018-08-20   
641-595 A Deep River IA DPRVIAXORS0  632      
641-623 A Montezuma IA MTZMIAXOPS0  632      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.