Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Griswold, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-778 A GRSWIAXODS1  1195 GRISWOLD COOP. TEL. CO. 644      
712-789 A OMAHNENWXCY  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644      
712-789 0 OMAHNENWXCY  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644      
712-789 1 OMAHNENWXCY  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644      
712-789 2 OMAHNENWXCY  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644      
712-789 6 OMAHNENWGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2023-12-21   
712-789 7   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644   2025-07-21   
712-789 8 OMAHNENWGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2021-03-10   
712-789 9 OMAHNENWXCY  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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