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.

Switch: SXCYIA794MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
402-241 9 South Sioux City NE 145J TERRA NOVA TELECOM INC. 630   2024-12-05   
712-240 5 Spencer IA 145J TERRA NOVA TELECOM INC. 630   2024-05-26   
712-240 7 Spencer IA 145J TERRA NOVA TELECOM INC. 630   2024-12-30   
712-587 1 Sioux City IA 145J TERRA NOVA TELECOM INC. 630   2024-12-04   
712-833 A Sioux City IA 145J TERRA NOVA TELECOM INC. 630      
712-880 8 Mapleton IA 145J TERRA NOVA TELECOM INC. 630   2024-02-14   
712-880 9 Mapleton IA 145J TERRA NOVA TELECOM INC. 630   2024-09-12   
712-955 5 Merrill IA 145J TERRA NOVA TELECOM INC. 630   2024-02-13   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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