Local Calling Guide

Area code/prefix search

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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-548 A Mason City IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632      
641-548 0 Mason City IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-07-06   
641-548 1 Mason City IA DESMIADTX2Y  506J TWILIO INTERNATIONAL, INC. 632   2021-01-08   
641-548 2 Mason City IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2021-04-16   
641-548 3 Mason City IA DESMIADTXMX  073H TELNYX LLC 632   2020-05-29   
641-548 4 Mason City IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2019-09-20   
641-548 5 Mason City IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2019-10-27   
641-548 6 Mason City IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2018-08-26   
641-548 7 Mason City IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-10-02   
641-548 8 Mason City IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-07-06   
641-548 9 Mason City IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2018-07-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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