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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-420 A Waterloo IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-420 0 Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2023-08-29   
319-420 1 Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2023-08-29   
319-420 3 Waterloo IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-28   
319-420 4 Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2023-11-25   
319-420 5 Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2023-12-20   
319-420 6 Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2024-02-05   
319-420 7 Waterloo IA   221F ONVOY, LLC - IA 635   2024-02-25   
319-420 8 Waterloo IA   221F ONVOY, LLC - IA 635   2024-02-25   
319-420 9 Waterloo IA   221F ONVOY, LLC - IA 635   2024-02-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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