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: 647

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-647 A Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 0 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 1 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 2 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 3 Portland MI LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2018-05-28   
517-647 4 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 5 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 6 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 7 Portland MI PTLDMIPTRSA  9323 MICHIGAN BELL TEL CO 346      
517-647 8 Portland MI LNNGMIMN12Z  1200 TALK AMERICA INC. - MI 346   2009-10-05   
517-647 9 Portland MI LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2019-02-19   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.