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: 630

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-630 A Columbus WI MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-630 0 Columbus WI   6274 UNITED STATES CELLULAR - WI 356      
920-630 1 Columbus WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2021-01-10   
920-630 3 Columbus WI   225C ONVOY, LLC - WI 356   2021-04-08   
920-630 4 Columbus WI   225C ONVOY, LLC - WI 356   2021-04-08   
920-630 5 Columbus WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2021-12-18   
920-630 6 Columbus WI   624H ONVOY SPECTRUM, LLC 356   2021-06-25   
920-630 7 Columbus WI   490J DISH WIRELESS, LLC 356   2023-08-19   
920-630 8 Columbus WI   939H COMMIO, LLC 356   2022-12-05   
920-630 9 Columbus WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2021-03-28   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.