Local Calling Guide

Area code/prefix search

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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-240 A Spencer IA SPNCIAAC2MD  6266 UNITED STATES CELLULAR - IA 630      
712-240 0 Spencer IA   6266 UNITED STATES CELLULAR - IA 630      
712-240 1 Spencer IA   145J TERRA NOVA TELECOM INC. 630   2022-08-30   
712-240 2 Spencer IA   6266 UNITED STATES CELLULAR - IA 630      
712-240 3 Spencer IA   6266 UNITED STATES CELLULAR - IA 630      
712-240 4 Spencer IA   6266 UNITED STATES CELLULAR - IA 630      
712-240 5 Spencer IA   145J TERRA NOVA TELECOM INC. 630   2024-05-26   
712-240 6 Spencer IA   145J TERRA NOVA TELECOM INC. 630   2023-11-16   
712-240 7 Spencer IA   145J TERRA NOVA TELECOM INC. 630   2024-12-30   
712-240 9 Spencer IA   145J TERRA NOVA TELECOM INC. 630   2025-07-26   

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

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