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: 852

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-852 A Orrick MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524      
816-852 0 Orrick MO KSCYKSJOSMD  993E BANDWIDTH.COM CLEC, LLC - MO 524   2009-01-18   
816-852 1 Orrick MO   793K TWC IP ENABLED SERVICES, LLC 524   2023-08-13   
816-852 2 Orrick MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2020-07-10   
816-852 3 Orrick MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2020-07-10   
816-852 8 Orrick MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2018-10-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.