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.

Lancaster, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-303 A KSCYMO55XXX  093F ONVOY, LLC - MO 524      
660-303 0 KSCYMO03DS2  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524   2016-02-13   
660-303 1 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2023-09-10   
660-303 2 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-07-23   
660-303 4 KSCYMO09QMD  516C AT&T CORP. 524   2024-10-07   
660-303 6 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-01-06   
660-303 7   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2014-05-07   
660-303 8 KSCYMO55XNY  073H TELNYX LLC 524   2019-09-30   
660-303 9 KSCYMO55XYY  624H ONVOY SPECTRUM, LLC 524   2025-01-12   
660-457 A LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 1 LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 2 LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 3 LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      

Last updated: Sat, 04 Jul 2026 13:07:56 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.