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.

NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 409

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-409 A North Sylvania MI TOLEOHAC3MD  543C ONVOY, LLCV - MI 326      
734-409 0 North Sylvania MI TOLDOH2105Z  624H ONVOY SPECTRUM, LLC 326   2024-09-08   
734-409 7 North Sylvania MI TOLEOHAC3MD  543C ONVOY, LLCV - MI 326   2021-09-03   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.