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.

Rockwell, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-372 A DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
641-372 1   6529 T-MOBILE USA, INC. 632   2024-08-15   
641-372 2   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-16   
641-372 3   5562 METROPCS, INC. 632   2018-08-03   
641-372 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-12-01   
641-372 9   751F MCC TELEPHONY OF IOWA, LLC - IA 632   2010-04-15   
641-822 A RCWLIAXODS2  1282 ROCKWELL COOP. TEL. ASSN. 632      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.