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: 612

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-612 A Garden City KS WCHTKSBRXPZ  624H ONVOY SPECTRUM, LLC 532      
620-612 0 Garden City KS WCHTKSBRXPZ  624H ONVOY SPECTRUM, LLC 532   2025-03-02   
620-612 1 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-03-03   
620-612 2 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-03-03   
620-612 3 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-05-22   
620-612 4 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-06-28   
620-612 5 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-09-11   
620-612 6 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-10-30   
620-612 7 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-10-15   
620-612 8 Garden City KS WCHTKSBRXUZ  829J PAETEC ITEL, LLC 532   2025-08-14   
620-612 9 Garden City KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2025-10-30   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.