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: 205

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-205 A Mount Vernon MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522      
417-205 0 Mount Vernon MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2018-11-28   
417-205 3 Mount Vernon MO BASNMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2015-07-13   
417-205 4 Mount Vernon MO SPFDMODL5MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2023-02-24   
417-205 5 Mount Vernon MO BASNMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2017-10-09   
417-205 6 Mount Vernon MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2022-10-05   
417-205 7 Mount Vernon MO SPFDMOTLX2Y  508J CENTURYLINK COMMUNICATIONS, LLC 522   2014-06-06   
417-205 8 Mount Vernon MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2019-06-08   
417-205 9 Mount Vernon MO SPFDMOPYAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2020-04-15   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.