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: 1577 GREAT PLAINS COMMUNICATIONS, INC.

<< 1 2 3 4

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-429 A North Crookston SD CKTNNERDRS1  644      
605-822 A North Cody SD CODYNERDRS1  644      
605-969 A North Kilgore SD KLGRNEXCRS0  644      
785-237 A South Byron KS BYRNNEXCRS0  958      
785-326 A South Chester KS CHESNEXCRS1  958      
785-745 A South Red Cloud KS RDCLNEXCDS1  958      
970-448 A West Venango CO VNNGNEXHRS1  646      

<< 1 2 3 4

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.