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

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-403 A Caney KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532      
620-403 3 Caney KS WCHTKSBRTMD  516C AT&T CORP. 532   2024-09-09   
620-403 4 Caney KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2021-03-06   
620-403 5 Caney KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2021-03-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.