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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-300 3 Onsted MI   543C ONVOY, LLCV - MI 340   2019-12-11   
517-300 4 Onsted MI   543C ONVOY, LLCV - MI 340   2020-05-09   
517-300 5 Onsted MI   543C ONVOY, LLCV - MI 340   2020-05-09   
517-300 6 Onsted MI   543C ONVOY, LLCV - MI 340   2020-05-09   
517-300 7 Onsted MI   543C ONVOY, LLCV - MI 340   2020-05-09   
517-300 8 Onsted MI   543C ONVOY, LLCV - MI 340   2020-06-14   
517-300 9 Onsted MI   543C ONVOY, LLCV - MI 340   2020-06-14   
517-301 A Tecumseh MI PLMOMIFAFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-301 0 Tecumseh MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-301 1 Tecumseh MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-301 2 Tecumseh MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-11-01   
517-301 3 Tecumseh MI   543C ONVOY, LLCV - MI 340   2007-03-09   
517-301 4 Tecumseh MI   558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 340   2008-03-21   
517-301 5 Tecumseh MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2018-11-25   
517-301 6 Tecumseh MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2013-02-08   
517-301 7 Tecumseh MI   508J CENTURYLINK COMMUNICATIONS, LLC 340   2014-09-24   
517-301 8 Tecumseh MI   543C ONVOY, LLCV - MI 340   2021-01-31   
517-301 9 Tecumseh MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2014-01-03   
517-302 A Fowlerville MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-302 0 Fowlerville MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2023-01-05   
517-302 1 Fowlerville MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2022-02-21   
517-302 2 Fowlerville MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2022-05-20   
517-302 3 Fowlerville MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2022-08-13   
517-302 4 Fowlerville MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2022-08-13   
517-302 5 Fowlerville MI   939H COMMIO, LLC 346   2022-11-19   
517-302 6 Fowlerville MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2021-12-17   
517-302 7 Fowlerville MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2021-12-17   
517-302 8 Fowlerville MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2021-12-17   
517-302 9 Fowlerville MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2021-12-17   
517-303 A Lansing MI LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 0 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 1 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 2 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2009-10-02   
517-303 3 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 4 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 5 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 6 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-303 7 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2009-10-02   
517-303 8 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2009-12-20   
517-303 9 Lansing MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346      
517-304 A Howell MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
517-305 A Clarklake MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-305 0 Clarklake MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-10-31   
517-305 1 Clarklake MI   543C ONVOY, LLCV - MI 346   2016-04-02   
517-305 2 Clarklake MI   543C ONVOY, LLCV - MI 346   2012-10-14   
517-305 3 Clarklake MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2016-03-21   
517-305 4 Clarklake MI   543C ONVOY, LLCV - MI 346   2013-01-30   
517-305 6 Clarklake MI   516C AT&T CORP. 346   2011-09-30   
517-305 7 Clarklake MI   508J CENTURYLINK COMMUNICATIONS, LLC 346   2016-01-01   
517-305 8 Clarklake MI   543C ONVOY, LLCV - MI 346   2016-04-02   

<< 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 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.