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: COLOIAXODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-377 A Colo IA 1134 COLO TEL. CO. 632      
641-377 0 Colo IA 1134 COLO TEL. CO. 632      
641-377 1 Colo IA 1134 COLO TEL. CO. 632      
641-377 2 Colo IA 1134 COLO TEL. CO. 632      
641-377 3 Colo IA 1134 COLO TEL. CO. 632      
641-377 4 Colo IA 1134 COLO TEL. CO. 632      
641-377 5 Colo IA 1134 COLO TEL. CO. 632      
641-377 7 Colo IA 1134 COLO TEL. CO. 632      
641-377 8 Colo IA 1134 COLO TEL. CO. 632      
641-377 9 Colo IA 1134 COLO TEL. CO. 632      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.