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: 880

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-880 A Winfield KS WCHTKSMBXSY  939H COMMIO, LLC 532      
620-880 0 Winfield KS   939H COMMIO, LLC 532   2023-04-01   
620-880 1 Winfield KS   205F ONVOY, LLC - KS 532   2023-10-22   
620-880 2 Winfield KS   205F ONVOY, LLC - KS 532   2023-10-22   
620-880 3 Winfield KS   205F ONVOY, LLC - KS 532   2023-10-22   
620-880 4 Winfield KS   205F ONVOY, LLC - KS 532   2023-10-22   
620-880 5 Winfield KS   205F ONVOY, LLC - KS 532   2023-10-22   
620-880 7 Winfield KS   6532 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 532   2025-12-08   
620-880 8 Winfield KS   6532 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 532   2025-06-27   
620-880 9 Winfield KS   624H ONVOY SPECTRUM, LLC 532   2024-04-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.