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: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-366 A Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-366 0 Conrad IA DESMIAITX1X  751F MCC TELEPHONY OF IOWA, LLC - IA 632      
641-366 1 Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-366 2 Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-366 3 Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-366 4 Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-366 6 Conrad IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632      
641-366 7 Conrad IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-366 8 Conrad IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632      
641-366 9 Conrad IA UNINIAXODS1  1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.