Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Iowa City, IA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-930 5 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-930 6 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-930 7 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-930 8 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-930 9 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2010-06-20   
319-936 A CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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