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: 575

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-575 A Ottumwa IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632      
641-575 0 Ottumwa IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-08-19   
641-575 1 Ottumwa IA   221F ONVOY, LLC - IA 632   2024-03-02   
641-575 2 Ottumwa IA DESMIADTX7X  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2020-04-26   
641-575 3 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2019-09-20   
641-575 4 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2019-09-20   
641-575 5 Ottumwa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2018-08-20   
641-575 6 Ottumwa IA OSKLIA14DS0  916A MAHASKA COMMUNICATION GROUP, LLC - IA 632   2022-09-04   
641-575 8 Ottumwa IA   221F ONVOY, LLC - IA 632   2024-04-05   
641-575 9 Ottumwa IA   221F ONVOY, LLC - IA 632   2024-04-05   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.