Local Calling Guide

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Waterloo, IA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-888 8 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2017-10-08   
319-888 9 CDRRIADTUMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2019-04-16   
319-939 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-939 0   6266 UNITED STATES CELLULAR - IA 635      
319-939 1   6266 UNITED STATES CELLULAR - IA 635      
319-939 2   6266 UNITED STATES CELLULAR - IA 635      
319-939 3   6266 UNITED STATES CELLULAR - IA 635      
319-939 4   6266 UNITED STATES CELLULAR - IA 635      
319-939 5   6266 UNITED STATES CELLULAR - IA 635      
319-939 6   6266 UNITED STATES CELLULAR - IA 635      
319-939 7   6266 UNITED STATES CELLULAR - IA 635      
319-939 8   6266 UNITED STATES CELLULAR - IA 635      
319-939 9   6266 UNITED STATES CELLULAR - IA 635      
319-961 A CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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