Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 SPNCIAAC2MD  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 SPNCIAAC2MD  6266 UNITED STATES CELLULAR - IA 630      
712-240 3 Spencer IA SPNCIAAC2MD  6266 UNITED STATES CELLULAR - IA 630      
712-240 4 Spencer IA SPNCIAAC2MD  6266 UNITED STATES CELLULAR - IA 630      
712-240 5 Spencer IA SXCYIA794MD  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 SXCYIA794MD  145J TERRA NOVA TELECOM INC. 630   2024-12-30   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.