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: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-277 A Ottumwa IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632      
641-277 0 Ottumwa IA   221F ONVOY, LLC - IA 632   2024-03-02   
641-277 1 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-08-11   
641-277 2 Ottumwa IA DESMIADTX2Y  506J TWILIO INTERNATIONAL, INC. 632   2020-12-28   
641-277 3 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-08-11   
641-277 4 Ottumwa IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2022-02-18   
641-277 5 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-08-11   
641-277 6 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-08-11   
641-277 7 Ottumwa IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-05-05   
641-277 8 Ottumwa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2023-08-11   
641-277 9 Ottumwa IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2020-09-19   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.