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.

NPA: 816 [Rate centres in NPA 816] [Dial plan for NPA 816]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-357 A Trimble MO TRMBMOXARS0  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 524      
816-357 0 Trimble MO   093F ONVOY, LLC - MO 524   2023-09-10   
816-357 1 Trimble MO   073H TELNYX LLC 524   2020-08-08   
816-357 2 Trimble MO   1151 BRIGHTSPEED OF EAST MISSOURI, LLC 524      
816-357 3 Trimble MO   793K TWC IP ENABLED SERVICES, LLC 524   2022-08-07   
816-357 4 Trimble MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2020-02-24   
816-357 5 Trimble MO   093F ONVOY, LLC - MO 524   2021-03-06   
816-357 6 Trimble MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524   2014-05-04   
816-357 7 Trimble MO   508J CENTURYLINK COMMUNICATIONS, LLC 524   2013-10-29   
816-357 8 Trimble MO   093F ONVOY, LLC - MO 524   2020-07-09   
816-357 9 Trimble MO   093F ONVOY, LLC - MO 524   2020-07-09   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.