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: 7215 INDEPENDENT NETWORKS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
515-870 A Swea City IA SWCYIAAD0MD  632      
515-870 8 Swea City IA SWCYIAAD0MD  632   2017-09-14   
712-868 A Armstrong IA ARMSIAXODS0  630      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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