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: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-376 A Howell MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
517-376 0 Howell MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2003-08-02   
517-376 1 Howell MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2003-08-02   
517-376 2 Howell MI LIVNMIUX0MD  5562 METROPCS, INC. 340   2004-05-14   
517-376 3 Howell MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-02-02   
517-376 4 Howell MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2003-03-22   
517-376 5 Howell MI DTRTMIBHMMD  1200 TALK AMERICA INC. - MI 340   2005-08-13   
517-376 6 Howell MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
517-376 8 Howell MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2010-08-06   
517-376 9 Howell MI FETPMIAU2MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 340   2007-02-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.