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: SXCYIADTKMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
402-508 3 South Sioux City NE 7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 630   2018-10-08   
605-308 5 North Sioux City SD 693G TELEPORT COMMUNICATIONS AMERICA SD-LLC 630   2022-09-02   
712-291 4 Storm Lake IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2013-05-15   
712-321 8 Cherokee IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2022-07-15   
712-380 6 Estherville IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2012-07-12   
712-454 A Sioux City IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630      
712-454 6 Sioux City IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2010-01-23   
712-539 4 Le Mars IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2019-03-30   
712-584 7 Spencer IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2012-07-12   
712-631 8 Sheldon IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2018-10-08   
712-666 3 Sioux City IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2024-03-28   
712-759 6 Spirit Lake IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 630   2012-03-12   

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

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