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: 684

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-684 A Napoleon MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-684 0 Napoleon MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2016-04-11   
517-684 1 Napoleon MI LNNGMIMNXQZ  508J CENTURYLINK COMMUNICATIONS, LLC 346   2016-01-26   
517-684 2 Napoleon MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2012-05-28   
517-684 3 Napoleon MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-01-04   
517-684 4 Napoleon MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-684 5 Napoleon MI LNNGMIMNXMZ  516C AT&T CORP. 346   2011-09-30   
517-684 6 Napoleon MI LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2015-06-18   
517-684 7 Napoleon MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-684 8 Napoleon MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-01-30   
517-684 9 Napoleon MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2016-04-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.