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: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 607

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-607 A Mano MO BASNMOXAXJX  093F ONVOY, LLC - MO 522      
417-607 0 Mano MO SPFDMOTLX8Y  073H TELNYX LLC 522   2020-12-26   
417-607 2 Mano MO BASNMOXAXJX  093F ONVOY, LLC - MO 522   2021-05-14   
417-607 6 Mano MO BASNMOXAXJX  093F ONVOY, LLC - MO 522   2020-12-18   
417-607 7 Mano MO BASNMOXAXJX  093F ONVOY, LLC - MO 522   2020-12-18   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.