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: 414

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-414 A Neenah WI GNBYWI01VMD  225C ONVOY, LLC - WI 350      
920-414 0 Neenah WI   6274 UNITED STATES CELLULAR - WI 350   2022-05-19   
920-414 1 Neenah WI   516J TON80 COMMUNICATIONS, LLC 350   2022-04-05   
920-414 2 Neenah WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2023-04-07   
920-414 3 Neenah WI   225C ONVOY, LLC - WI 350   2024-01-08   
920-414 4 Neenah WI   225C ONVOY, LLC - WI 350   2021-12-20   
920-414 5 Neenah WI   225C ONVOY, LLC - WI 350   2021-12-20   
920-414 6 Neenah WI   225C ONVOY, LLC - WI 350   2021-12-20   
920-414 7 Neenah WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2023-07-14   
920-414 8 Neenah WI   939H COMMIO, LLC 350   2022-08-21   
920-414 9 Neenah WI   225C ONVOY, LLC - WI 350   2023-08-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.