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: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-560 A Fairfield IA KNVLIAXCTMD  221F ONVOY, LLC - IA 632   2024-05-05   
641-560 0 Fairfield IA KNVLIAXCTMD  221F ONVOY, LLC - IA 632   2024-05-05   
641-560 1 Fairfield IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2025-05-23   
641-560 2 Fairfield IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-05-07   
641-560 4 Fairfield IA   5562 METROPCS, INC. 632   2025-04-25   
641-560 5 Fairfield IA   5562 METROPCS, INC. 632   2025-04-25   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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