Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Colo, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-377 A COLOIAXODS0  1134 COLO TEL. CO. 632      
641-377 0   1134 COLO TEL. CO. 632      
641-377 1   1134 COLO TEL. CO. 632      
641-377 2   1134 COLO TEL. CO. 632      
641-377 3   1134 COLO TEL. CO. 632      
641-377 4   1134 COLO TEL. CO. 632      
641-377 5   1134 COLO TEL. CO. 632      
641-377 6   6529 T-MOBILE USA, INC. 632   2006-09-07   
641-377 7   1134 COLO TEL. CO. 632      
641-377 8   1134 COLO TEL. CO. 632      
641-377 9   1134 COLO TEL. CO. 632      
641-808 A DESMIAITX6X  6529 T-MOBILE USA, INC. 632      
641-808 0   145J TERRA NOVA TELECOM INC. 632   2025-05-17   
641-808 1   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-14   
641-808 4   5562 METROPCS, INC. 632   2018-08-03   
641-808 8   6529 T-MOBILE USA, INC. 632   2018-04-20   
641-808 9   6529 T-MOBILE USA, INC. 632   2018-04-20   

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

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