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: 280

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-280 A Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
517-280 0 Adrian MI PLMOMIFAFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2021-05-03   
517-280 1 Adrian MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2021-07-15   
517-280 2 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2021-03-22   
517-280 3 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2021-03-22   
517-280 4 Adrian MI ADRNMIXGMMD  624H ONVOY SPECTRUM, LLC 340   2021-06-13   
517-280 5 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2021-09-02   
517-280 6 Adrian MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2021-09-02   
517-280 7 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2021-03-20   
517-280 8 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2021-03-20   
517-280 9 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2021-03-20   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.