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: 346F HEART OF IOWA VENTURES, L.L.C. - IA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
641-354 7 Marshalltown IA MRTWIAAQ3MD  632      
641-473 6 Gladbrook IA MRTWIAAQ3MD  632      
641-479 3 Le Grand IA MRTWIAAQ3MD  632      
641-758 A Marshalltown IA MRTWIAAQ3MD  632      
641-758 3 Marshalltown IA MRTWIAAQ3MD  632      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.