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.

Protem, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
417-785 A PRTMMOXARS0  9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-785 0   9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-785 1   093F ONVOY, LLC - MO 522   2018-11-07   
417-785 2   093F ONVOY, LLC - MO 522   2019-12-05   
417-785 3   093F ONVOY, LLC - MO 522   2019-12-05   
417-785 4   9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-785 6   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2014-06-06   
417-785 7   073H TELNYX LLC 522   2020-08-07   
417-785 8   093F ONVOY, LLC - MO 522   2021-03-05   
417-785 9   145J TERRA NOVA TELECOM INC. 522   2025-07-21   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.