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: 620 [Rate centres in NPA 620] [Dial plan for NPA 620]

NXX: 740

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-740 A Harper KS WCHTKSBRXFX  6267 UNITED STATES CELLULAR - KS 532      
620-740 0 Harper KS WCHTKSBRXFX  6267 UNITED STATES CELLULAR - KS 532      
620-740 1 Harper KS WCHTKSTPDS0  018H PEERLESS NETWORK OF KANSAS, LLC - KS 532   2016-02-15   
620-740 2 Harper KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2017-05-02   
620-740 3 Harper KS WCHTKSTPNMD  073H TELNYX LLC 532   2019-05-20   
620-740 4 Harper KS WCHTKSBRX5X  986E BANDWIDTH.COM CLEC, LLC - KS 532   2021-07-04   
620-740 5 Harper KS WCHTKSBRTMD  516C AT&T CORP. 532   2024-09-16   
620-740 7 Harper KS WCHTKSBRXVY  508J CENTURYLINK COMMUNICATIONS, LLC 532   2014-03-07   
620-740 8 Harper KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2019-04-09   
620-740 9 Harper KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2019-04-09   

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

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