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.

Switch: GNBYWI11DSA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-405 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 0 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 1 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 2 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 3 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 6 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 7 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-429 9 Green Bay WI 9327 WISCONSIN BELL INC 350      
920-490 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-491 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-494 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-496 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-497 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-498 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-499 A Green Bay WI 9327 WISCONSIN BELL INC 350      
920-592 A Green Bay WI 9327 WISCONSIN BELL INC 350      

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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