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: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-837 A Albia IA DESMIADTX6Y  516J TON80 COMMUNICATIONS, LLC 632      
641-837 4 Albia IA DESMIADTX6Y  516J TON80 COMMUNICATIONS, LLC 632   2022-04-25   
641-837 8 Albia IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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