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.

NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-274 A Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 0 Chillicothe IL PEORILPJDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2017-04-02   
309-274 1 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 2 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 3 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 4 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 5 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 6 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 7 Chillicothe IL PEORILPJXYX  224C ONVOY, LLC 368   2018-08-02   
309-274 8 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      
309-274 9 Chillicothe IL CHLCILXDDS0  1015 FRONTIER NORTH, INC. - IL 368      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.