Local Calling Guide

Area code/prefix search

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

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-638 A Oskaloosa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-638 0 Oskaloosa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-638 1 Oskaloosa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-638 2 Oskaloosa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2015-09-04   
641-638 3 Oskaloosa IA DESMIADTTMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 632   2011-08-19   
641-638 4 Oskaloosa IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2014-04-13   
641-638 5 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-02-26   
641-638 6 Oskaloosa IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2010-07-03   
641-638 7 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-02-26   
641-638 8 Oskaloosa IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2013-04-04   
641-638 9 Oskaloosa IA DESMIAITGT5  444G AUREON COMMUNICATIONS, LLC 632   2013-11-18   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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