Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Preston, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
417-566 A BASNMO06DS0  142C RYSTEC, INC 522      
417-566 0   142C RYSTEC, INC 522   2004-12-30   
417-566 1   093F ONVOY, LLC - MO 522   2018-11-07   
417-566 2   073H TELNYX LLC 522   2020-08-07   
417-566 5   145J TERRA NOVA TELECOM INC. 522   2025-07-21   
417-566 6   965H FRACTEL, LLC 522   2020-09-27   
417-566 7   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2014-06-06   
417-722 A PSTNMOXARS0  9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-722 2   093F ONVOY, LLC - MO 522   2019-12-05   
417-722 3   093F ONVOY, LLC - MO 522   2019-12-05   
417-722 4   9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-722 8   9787 BRIGHTSPEED OF MISSOURI, LLC 522      
417-722 9   9787 BRIGHTSPEED OF MISSOURI, LLC 522      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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