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.

OCN: 7021 FIBERCOMM, LC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
402-412 A South Sioux City NE SXCYIA03DS1  630      
605-217 A North Sioux City SD SXCYIA03DS1  630      
712-224 A Sioux City IA SXCYIA03DS1  630      
712-226 A Sioux City IA SXCYIA03DS1  630      
712-429 A Sloan IA SXCYIA03DS1  630      
712-429 5 Sloan IA SXCYIA03DS1  630   2012-06-08   
712-823 1 Sergeant Bluff IA SXCYIA03DS1  630   2012-06-08   
712-823 2 Sergeant Bluff IA SXCYIA03DS1  630   2014-04-07   
712-945 A Salix IA SXCYIA03DS1  630      
712-945 4 Salix IA SXCYIA03DS1  630   2012-06-08   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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