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: SXCYIADTDMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-232 8 Spencer IA 515J IP HORIZON LLC 630   2025-10-17   
712-284 8 Alta IA 515J IP HORIZON LLC 630   2025-10-03   
712-334 9 Sioux Rapids IA 515J IP HORIZON LLC 630   2025-10-17   
712-337 1 Arnolds Park IA 515J IP HORIZON LLC 630   2025-10-03   
712-391 0 Anthon IA 515J IP HORIZON LLC 630   2025-10-03   
712-397 0 Whiting IA 515J IP HORIZON LLC 630   2025-10-17   
712-403 8 Sheldon IA 515J IP HORIZON LLC 630   2025-10-17   
712-416 0 Cherokee IA 515J IP HORIZON LLC 630   2025-10-17   
712-431 8 Onawa IA 515J IP HORIZON LLC 630   2025-10-17   
712-538 2 Pocahontas IA 515J IP HORIZON LLC 630   2025-10-17   
712-554 0 Lake Park IA 515J IP HORIZON LLC 630   2025-10-03   
712-564 A Sioux City IA 515J IP HORIZON LLC 630      
712-599 0 Correctionville IA 515J IP HORIZON LLC 630   2025-10-03   
712-696 0 Danbury IA 515J IP HORIZON LLC 630   2025-10-03   
712-759 9 Spirit Lake IA 515J IP HORIZON LLC 630   2025-10-17   
712-765 8 Estherville IA 515J IP HORIZON LLC 630   2025-10-03   
712-845 1 Laurens IA 515J IP HORIZON LLC 630   2025-10-03   
712-882 0 Mapleton IA 515J IP HORIZON LLC 630   2025-10-03   
712-936 A Storm Lake IA 515J IP HORIZON LLC 630   2025-11-14   
712-936 1 Storm Lake IA 515J IP HORIZON LLC 630   2025-11-14   
712-938 8 Merrill IA 515J IP HORIZON LLC 630   2025-10-03   
712-977 0 Milford IA 515J IP HORIZON LLC 630   2025-10-17   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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