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: MILWWIAU06Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
262-351 8 Kenosha WI 495J STRATUS NETWORKS 356   2020-09-30   
414-284 A Milwaukee Zone 4 WI 495J STRATUS NETWORKS 356      
414-284 1 Milwaukee Zone 4 WI 495J STRATUS NETWORKS 356   2021-01-18   
920-524 8 Brillion WI 495J STRATUS NETWORKS 356   2021-03-31   
920-545 3 Watertown WI 495J STRATUS NETWORKS 356   2020-09-30   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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