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.

South Seymour, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-360 A DESMIADTFMD  093F ONVOY, LLC - MO 632      
660-360 0   093F ONVOY, LLC - MO 632   2023-10-09   
660-360 3   624H ONVOY SPECTRUM, LLC 632   2024-03-16   
660-360 6   093F ONVOY, LLC - MO 632   2022-02-11   
660-399 A SYMRIAXORS8  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 632      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.