Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-821 A Anamosa IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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