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
517-946 A Cambria MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-946 3 Cambria MI   3535 ACD TELECOM, INC. - MI 346      
517-946 4 Cambria MI   543C ONVOY, LLC - MI 346   2018-10-12   
517-946 7 Cambria MI   7575 CENTURYLINK COMMUNICATIONS LLC 346   2016-01-25   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.