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: SFLDMITOJMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-439 A Royal Oak MI 961J WOW! INTERNET, CABLE AND PHONE 340      
248-941 A Rochester MI 961J WOW! INTERNET, CABLE AND PHONE 340      
248-946 A Northville MI 961J WOW! INTERNET, CABLE AND PHONE 340      
248-978 A Pontiac MI 961J WOW! INTERNET, CABLE AND PHONE 340      
586-630 A Mount Clemens MI 961J WOW! INTERNET, CABLE AND PHONE 340      
586-806 A Center Line MI 961J WOW! INTERNET, CABLE AND PHONE 340      
734-225 A Wyandotte MI 961J WOW! INTERNET, CABLE AND PHONE 340      
734-578 A Wayne MI 961J WOW! INTERNET, CABLE AND PHONE 340      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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