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: 617

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-617 A Dunlap IL PEORILPJXYX  224C ONVOY, LLC 368      
309-617 0 Dunlap IL PEORILPJXRZ  495J STRATUS NETWORKS 368      
309-617 1 Dunlap IL   624H ONVOY SPECTRUM, LLC 368      
309-617 2 Dunlap IL PEORILPJXYX  224C ONVOY, LLC 368      
309-617 3 Dunlap IL PEORILPJXYX  224C ONVOY, LLC 368      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.