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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-742 A Galena KS WCHTKSBRX0Y  593K MCC TELEPHONY LLC 532      
620-742 0 Galena KS   145J TERRA NOVA TELECOM INC. 532   2025-06-06   
620-742 7 Galena KS WCHTKSTPXMD  516J TON80 COMMUNICATIONS, LLC 532   2022-03-14   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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