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: 606

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-606 A Mount Vernon MO BASNMOBJ1MD  6275 UNITED STATES CELLULAR - MO 522      
417-606 0 Mount Vernon MO BASNMOBJ1MD  6275 UNITED STATES CELLULAR - MO 522   2005-07-01   
417-606 1 Mount Vernon MO BASNMOBJ1MD  6275 UNITED STATES CELLULAR - MO 522   2021-02-26   
417-606 2 Mount Vernon MO SPFDMOMCXIX  6701 AERIAL COMMUNICATIONS, INC. 522   2021-06-09   
417-606 3 Mount Vernon MO SPFDMOMCXIX  6701 AERIAL COMMUNICATIONS, INC. 522   2021-06-09   
417-606 4 Mount Vernon MO SPFDMOMCXIX  6701 AERIAL COMMUNICATIONS, INC. 522   2021-06-09   
417-606 5 Mount Vernon MO BASNMO06DS0  142C RYSTEC, INC 522   2007-03-30   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.