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: 477

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-477 A Humboldt KS WCHTKSTPYMD  321J HD CARRIER LLC 532      
620-477 0 Humboldt KS   515J IP HORIZON LLC 532   2022-04-30   
620-477 2 Humboldt KS   145J TERRA NOVA TELECOM INC. 532   2024-02-16   
620-477 7 Humboldt KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2021-07-24   
620-477 8 Humboldt KS   018H PEERLESS NETWORK OF KANSAS, LLC - KS 532   2024-02-20   
620-477 9 Humboldt KS WCHTKSTPYMD  321J HD CARRIER LLC 532   2021-07-23   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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