Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: IWCYIA708MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-379 A Iowa City IA 321J HD CARRIER LLC 635      
319-379 8 Iowa City IA 321J HD CARRIER LLC 635   2020-11-20   
319-379 9 Iowa City IA 321J HD CARRIER LLC 635   2020-11-20   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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