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: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 210

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-210 A Potterville MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346      
517-210 0 Potterville MI   543C ONVOY, LLCV - MI 346   2016-05-07   
517-210 1 Potterville MI   543C ONVOY, LLCV - MI 346   2016-05-07   
517-210 2 Potterville MI   543C ONVOY, LLCV - MI 346   2020-11-21   
517-210 3 Potterville MI   543C ONVOY, LLCV - MI 346   2020-11-21   
517-210 4 Potterville MI   624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-210 5 Potterville MI   543C ONVOY, LLCV - MI 346   2021-03-05   
517-210 6 Potterville MI   543C ONVOY, LLCV - MI 346   2021-03-05   
517-210 7 Potterville MI   543C ONVOY, LLCV - MI 346   2021-07-11   
517-210 8 Potterville MI   543C ONVOY, LLCV - MI 346   2021-06-18   
517-210 9 Potterville MI   543C ONVOY, LLCV - MI 346   2021-08-22   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.