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: PLMOMIMNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
734-207 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-254 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-354 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-414 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-416 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-451 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-453 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-454 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-455 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-459 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-582 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      
734-737 A Plymouth MI 9323 MICHIGAN BELL TEL CO 340      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.