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: 342

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-342 A Avenue City MO   612K CSC VOICE, LLC 524      
816-342 0 Avenue City MO KSCYMO55XSY  073H TELNYX LLC 524   2020-07-25   
816-342 2 Avenue City MO   612K CSC VOICE, LLC 524   2014-03-02   
816-342 3 Avenue City MO   612K CSC VOICE, LLC 524   2007-06-19   
816-342 4 Avenue City MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2017-03-20   
816-342 5 Avenue City MO KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-05-15   
816-342 6 Avenue City MO KSCYMO55X0Z  965H FRACTEL, LLC 524   2019-11-14   
816-342 7 Avenue City MO KSCAMO961MD  508J CENTURYLINK COMMUNICATIONS, LLC 524   2013-10-25   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.