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: 1133 C-M-L TEL. COOP. ASSN. OF MERIDEN IOWA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
712-436 A Cleghorn IA MRDNIAXODS0  630      
712-437 A Larrabee IA MRDNIAXODS0  630      
712-443 A Meriden IA MRDNIAXODS0  630      
712-723 A Archer IA MRDNIAXODS0  630      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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