Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   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   751F MCC TELEPHONY OF IOWA, LLC - IA 632   2020-04-26   
641-575 3 Ottumwa IA   221F ONVOY, LLC - IA 632   2019-09-20   
641-575 4 Ottumwa IA   221F ONVOY, LLC - IA 632   2019-09-20   
641-575 5 Ottumwa IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2018-08-20   
641-575 6 Ottumwa IA   916A MAHASKA COMMUNICATION GROUP, LLC - IA 632   2022-09-04   
641-575 7 Ottumwa IA   515J IP HORIZON LLC 632   2025-09-26   
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: Thu, 29 Jan 2026 14:35:03 UTC

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