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: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-574 A Lansing MI LNNGMIMNX1Z  672B CLEAR RATE COMMUNICATIONS, INC. - MI 346      
517-574 0 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-04-08   
517-574 1 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-04-08   
517-574 2 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-04-08   
517-574 3 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-08-11   
517-574 4 Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2008-09-03   
517-574 5 Lansing MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2008-09-03   
517-574 6 Lansing MI LNNGMIMNXSZ  5562 METROPCS, INC. 346   2008-12-28   
517-574 7 Lansing MI   279B CLEAR RATE COMMUNICATIONS, INC. - MI 346   2008-06-01   
517-574 8 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-08-11   
517-574 9 Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2010-08-11   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.