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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-577 A Adrian MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340      
517-577 0 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 1 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 2 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 3 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 4 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 5 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 6 Adrian MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2014-04-21   
517-577 7 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 8 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   
517-577 9 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2019-10-27   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.