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: 201

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-201 A Leslie MI LNNGMIMNX5Z  543C ONVOY, LLC - MI 346      
517-201 0 Leslie MI LNNGMIMNX5Z  543C ONVOY, LLC - MI 346   2016-05-06   
517-201 1 Leslie MI LNNGMIMNX5Z  543C ONVOY, LLC - MI 346   2016-05-06   
517-201 2 Leslie MI LNNGMIMNX5Z  543C ONVOY, LLC - MI 346   2018-09-13   
517-201 3 Leslie MI LNNGMIXIDS0  7157 BROOKS FIBER COMMUNICATIONS OF MICHIGAN - MI 346   2020-08-03   
517-201 4 Leslie MI   543C ONVOY, LLC - MI 346   2021-05-10   
517-201 5 Leslie MI   543C ONVOY, LLC - MI 346   2021-03-05   
517-201 6 Leslie MI   543C ONVOY, LLC - MI 346   2021-03-05   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.