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: NRVLMIMNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-305 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-344 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-347 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-348 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-349 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-374 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-380 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-449 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-465 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-596 A Northville MI 9323 MICHIGAN BELL TEL CO 340      
248-735 A Northville MI 9323 MICHIGAN BELL TEL CO 340      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.