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: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 254

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-254 A Cabool MO BASNMOBJ1MD  6275 UNITED STATES CELLULAR - MO 522      
417-254 0 Cabool MO   6275 UNITED STATES CELLULAR - MO 522      
417-254 1 Cabool MO   6275 UNITED STATES CELLULAR - MO 522      
417-254 2 Cabool MO   993E BANDWIDTH.COM CLEC, LLC - MO 522   2018-06-01   
417-254 3 Cabool MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2007-04-25   
417-254 4 Cabool MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2003-12-29   
417-254 5 Cabool MO   073H TELNYX LLC 522   2020-07-30   
417-254 6 Cabool MO   093F ONVOY, LLC - MO 522   2019-11-30   
417-254 7 Cabool MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2014-06-02   
417-254 8 Cabool MO   593K MCC TELEPHONY LLC 522   2010-06-13   
417-254 9 Cabool MO   093F ONVOY, LLC - MO 522   2018-11-07   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.