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: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 879

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-879 A Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-879 0 Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-12-01   
920-879 2 Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2023-09-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.