Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-403 A Sheldon IA SXCYIADT9MD  221F ONVOY, LLC - IA 630      
712-403 0 Sheldon IA   073H TELNYX LLC 630   2020-10-04   
712-403 1 Sheldon IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2022-11-28   
712-403 2 Sheldon IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2024-11-21   
712-403 3 Sheldon IA   221F ONVOY, LLC - IA 630   2021-09-16   
712-403 6 Sheldon IA   221F ONVOY, LLC - IA 630   2021-04-14   
712-403 7 Sheldon IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2025-10-25   
712-403 8 Sheldon IA   515J IP HORIZON LLC 630   2025-10-17   
712-403 9 Sheldon IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2025-11-26   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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