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: 649

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-649 A Oneida WI   793K TWC IP ENABLED SERVICES, LLC 350      
920-649 0 Oneida WI   793K TWC IP ENABLED SERVICES, LLC 350   2009-09-14   
920-649 6 Oneida WI STPTWI01HMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 350   2021-10-28   
920-649 9 Oneida WI   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-13   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.