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

NXX: 939

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-939 A Greenfield MO BASNMOXAX5X  593K MCC TELEPHONY LLC 522      
417-939 2 Greenfield MO BASNMOXAXJX  093F ONVOY, LLC - MO 522   2019-12-01   
417-939 3 Greenfield MO BASNMOXAXJX  093F ONVOY, LLC - MO 522   2019-12-01   
417-939 6 Greenfield MO SPFDMOTLXLX  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 522   2023-09-18   
417-939 7 Greenfield MO SPFDMOTLX2Y  508J CENTURYLINK COMMUNICATIONS, LLC 522   2014-06-02   
417-939 9 Greenfield MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2019-09-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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