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: GDRPMIBL45Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
269-287 1 St Joseph MI 495J STRATUS NETWORKS 348   2021-06-19   
269-528 0 Three Rivers MI 495J STRATUS NETWORKS 348   2021-06-19   
616-358 A Cedar Springs MI 495J STRATUS NETWORKS 348      
616-358 1 Cedar Springs MI 495J STRATUS NETWORKS 348   2021-05-17   
616-483 8 Dutton MI 495J STRATUS NETWORKS 348   2021-06-19   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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