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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-777 A Ottumwa IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-777 0 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 1 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 2 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 3 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 4 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 5 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 6 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 7 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 8 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      
641-777 9 Ottumwa IA   6266 UNITED STATES CELLULAR - IA 632      

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

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