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: 356

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-356 A Carthage MO LBNNMOBM0MD  6275 UNITED STATES CELLULAR - MO 522      
417-356 0 Carthage MO LBNNMOBM0MD  6275 UNITED STATES CELLULAR - MO 522      
417-356 1 Carthage MO LBNNMOBM0MD  6275 UNITED STATES CELLULAR - MO 522   2020-12-19   
417-356 2 Carthage MO SPFDMOMCX8X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2021-02-05   
417-356 3 Carthage MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2015-01-05   
417-356 4 Carthage MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2015-02-27   
417-356 5 Carthage MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2021-06-02   
417-356 6 Carthage MO SPFDMOTLXBX  5562 METROPCS, INC. 522   2017-09-10   
417-356 7 Carthage MO SPFDMOTLX2Y  508J CENTURYLINK COMMUNICATIONS, LLC 522   2014-06-06   
417-356 8 Carthage MO SPFDMOTLX7Y  093F ONVOY, LLC - MO 522   2016-08-27   
417-356 9 Carthage MO SPFDMOMCXMX  939H COMMIO, LLC 522   2022-09-22   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.