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.

Clarksdale, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
816-393 A CSDLMOXARS1  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 524      
816-393 0 KSCYMO55DSG  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524   2014-05-10   
816-393 1 KSCYMO55XSY  073H TELNYX LLC 524   2020-07-30   
816-393 4 KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2017-03-20   
816-393 5 CSDLMOXARS1  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 524      
816-393 6 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-05-15   
816-393 7 KSCAMO961MD  508J CENTURYLINK COMMUNICATIONS, LLC 524   2013-10-28   
816-693 A KSCYMO55XXX  093F ONVOY, LLC - MO 524      
816-693 0 KSCYMO55XYY  624H ONVOY SPECTRUM, LLC 524   2025-01-12   
816-693 2 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2020-07-06   
816-693 3 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2020-07-06   
816-693 6 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2018-11-26   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.