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: NWODIA051MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-323 A Northwood IA 6103 WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 632      
641-323 7 Northwood IA 6103 WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 632   2005-09-29   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.