Local Calling Guide

Area code/prefix search

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

NXX: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-508 A Osceola IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-508 0 Osceola IA   221F ONVOY, LLC - IA 632   2023-07-22   
641-508 1 Osceola IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2023-08-10   
641-508 2 Osceola IA   221F ONVOY, LLC - IA 632   2022-03-30   
641-508 3 Osceola IA   221F ONVOY, LLC - IA 632   2022-03-30   
641-508 4 Osceola IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2022-03-29   
641-508 5 Osceola IA   221F ONVOY, LLC - IA 632   2023-10-15   
641-508 6 Osceola IA   221F ONVOY, LLC - IA 632   2023-10-15   
641-508 7 Osceola IA   624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-508 8 Osceola IA   5562 METROPCS, INC. 632   2025-04-19   
641-508 9 Osceola IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2025-12-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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