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: 200

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-200 A Litchfield MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346      
517-200 0 Litchfield MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346      
517-200 2 Litchfield MI LNNGMIMNXFZ  965H FRACTEL, LLC 346   2020-01-17   
517-200 3 Litchfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-200 4 Litchfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-200 6 Litchfield MI LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2016-03-18   
517-200 7 Litchfield MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2016-01-26   
517-200 8 Litchfield MI LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2010-11-28   
517-200 9 Litchfield MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2018-10-20   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.