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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-518 A Howell MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-518 0 Howell MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-518 1 Howell MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-518 2 Howell MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-518 3 Howell MI   9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
517-518 4 Howell MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2008-09-29   
517-518 5 Howell MI   3535 ACD TELECOM, INC. - MI 340   2005-12-24   
517-518 6 Howell MI   260E YMAX COMMUNICATIONS CORP. - MI 340   2008-07-26   
517-518 7 Howell MI   260E YMAX COMMUNICATIONS CORP. - MI 340   2008-07-26   
517-518 8 Howell MI   8935 COMCAST PHONE OF MICHIGAN, LLC - MI 340   2007-02-05   
517-518 9 Howell MI   260E YMAX COMMUNICATIONS CORP. - MI 340   2008-07-26   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.