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]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-919 6 Laingsburg MI LNNGMIMN15Z  961J WOW! INTERNET, CABLE AND PHONE 346   2012-05-20   
517-919 7 Laingsburg MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-04-01   
517-919 8 Laingsburg MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-919 9 Laingsburg MI LNNGMIMN17Z  792K CHARTER IP ENABLED SERVICES, LLC 346   2024-09-15   
517-920 A Adrian MI SFLDMIDC0MD  817J INTERACTIVE SERVICES NETWORK, INC. 340      
517-920 0 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-03-12   
517-920 1 Adrian MI PLMOMIFAFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2009-09-26   
517-920 2 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2008-12-01   
517-920 3 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2008-12-01   
517-920 4 Adrian MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2008-07-10   
517-920 5 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-09-24   
517-920 6 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-09-24   
517-920 7 Adrian MI   046L CLEAR RATE COMMUNICATIONS, LLC 340   2009-06-04   
517-920 8 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-12-22   
517-920 9 Adrian MI LIVNMIUX3MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-12-22   
517-921 A Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-921 0 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-921 1 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-921 2 Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-921 3 Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-921 4 Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-921 5 Addison MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2018-05-18   
517-921 6 Addison MI LNNGMIMNXQZ  508J CENTURYLINK COMMUNICATIONS, LLC 346   2016-01-25   
517-921 7 Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-921 8 Addison MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2009-09-26   
517-921 9 Addison MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-922 A Eaton Rapids MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-923 A Fitchburg MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-923 2 Fitchburg MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-923 3 Fitchburg MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2020-02-10   
517-923 4 Fitchburg MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-923 7 Fitchburg MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-924 A Coldwater MI ANTSMIAD0MD  792K CHARTER IP ENABLED SERVICES, LLC 348      
517-924 0 Coldwater MI ANTSMIAD0MD  792K CHARTER IP ENABLED SERVICES, LLC 348   2007-02-25   
517-924 1 Coldwater MI ANTSMIAD0MD  792K CHARTER IP ENABLED SERVICES, LLC 348   2011-12-01   
517-924 3 Coldwater MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-02-04   
517-924 4 Coldwater MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-02-04   
517-924 5 Coldwater MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-10-07   
517-924 6 Coldwater MI GDRPMIBL31Z  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2021-10-07   
517-924 8 Coldwater MI GDRPMIBL31Z  5562 METROPCS, INC. 348   2021-10-15   
517-924 9 Coldwater MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-07-02   
517-925 A Grand Ledge MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-925 1 Grand Ledge MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2009-08-23   
517-925 2 Grand Ledge MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-925 3 Grand Ledge MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-925 4 Grand Ledge MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-925 5 Grand Ledge MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2007-03-05   
517-925 6 Grand Ledge MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2017-10-31   
517-925 7 Grand Ledge MI MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-925 8 Grand Ledge MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2007-04-16   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 >>

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.