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: 327

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-327 A Green Bay WI GNBYWI11DS0  9327 WISCONSIN BELL INC 350      
920-327 0 Green Bay WI   6529 T-MOBILE USA, INC. 350   2003-05-26   
920-327 1 Green Bay WI   6529 T-MOBILE USA, INC. 350   2005-11-15   
920-327 2 Green Bay WI   6529 T-MOBILE USA, INC. 350   2006-06-30   
920-327 3 Green Bay WI   6529 T-MOBILE USA, INC. 350   2005-12-12   
920-327 4 Green Bay WI   9327 WISCONSIN BELL INC 350      
920-327 5 Green Bay WI   9327 WISCONSIN BELL INC 350      
920-327 6 Green Bay WI   9327 WISCONSIN BELL INC 350      
920-327 7 Green Bay WI   9327 WISCONSIN BELL INC 350      
920-327 8 Green Bay WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 350   2011-03-12   
920-327 9 Green Bay WI   6529 T-MOBILE USA, INC. 350   2006-01-04   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.