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.

Holt MCA4, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
816-320 A HOLTMOXARS1  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
816-320 0 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-06-19   
816-320 1 KSCYMO030MD  579C TIME WARNER CBL INFO SVC (MO) DBA TIME WARNER CBL 524   2022-03-08   
816-320 2 HOLTMOXARS1  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
816-320 3 HOLTMOXARS1  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
816-320 4 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-03-06   
816-320 5 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2020-11-09   
816-320 6 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2020-11-09   
816-320 7 KSCAMO961MD  508J CENTURYLINK COMMUNICATIONS, LLC 524   2013-10-28   
816-320 8 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-03-06   
816-320 9 KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-07-12   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.