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: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-657 A Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346      
517-657 0 Lansing MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-12-31   
517-657 2 Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2014-09-29   
517-657 3 Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2015-07-15   
517-657 4 Lansing MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-07-30   
517-657 5 Lansing MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-07-30   
517-657 6 Lansing MI LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2015-07-13   
517-657 7 Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2015-07-02   
517-657 8 Lansing MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-07-30   
517-657 9 Lansing MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-12-31   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.