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: 502

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-502 A Waterloo IA CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2025-01-10   
319-502 0 Waterloo IA   515J IP HORIZON LLC 635   2025-08-15   
319-502 1 Waterloo IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2025-01-13   
319-502 2 Waterloo IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2025-10-04   
319-502 3 Waterloo IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2025-10-04   
319-502 4 Waterloo IA   221F ONVOY, LLC - IA 635   2025-10-26   
319-502 5 Waterloo IA CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2025-01-10   
319-502 8 Waterloo IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2025-10-25   
319-502 9 Waterloo IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2025-11-26   

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

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