All assignees
639 prefixes in 517 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 517-816 | LANSING | 543C | — | Yes |
| 517-817 | JACKSON | 9323 | — | Yes |
| 517-819 | LANSING | 2964 | — | Yes |
| 517-825 | HILLSDALE | 6003 | — | — |
| 517-826 | JONESVILLE | 6120 | 2002-05-14 | Yes |
| 517-827 | LANSING | 829J | — | — |
| 517-828 | HILLSDALE | 2550 | 2002-08-12 | — |
| 517-833 | MASON | 6120 | 2004-10-20 | Yes |
| 517-836 | EATON RPD | 046L | 2011-12-07 | Yes |
| 517-837 | TECUMSEH | 516J | 2022-01-11 | Yes |
| 517-840 | JACKSON | 9323 | — | — |
| 517-841 | JACKSON | 9323 | — | — |
| 517-842 | GRASS LAKE | 965H | 2020-02-19 | Yes |
| 517-848 | PORTLAND | 817J | 2001-11-13 | — |
| 517-849 | JONESVILLE | 9323 | — | Yes |
| 517-851 | STOCKBDG | 0681 | — | Yes |
| 517-852 | NASHVILLE | 9323 | — | Yes |
| 517-853 | LANSING | 6120 | — | Yes |
| 517-855 | LANSING | 145J | 2021-02-22 | Yes |
| 517-857 | SPRINGPORT | 0728 | — | — |
| 517-858 | BRONSON | 6120 | 2002-08-19 | Yes |
| 517-861 | HOWELL | 5562 | 2001-05-02 | Yes |
| 517-862 | LANSING | 2964 | 2001-11-09 | Yes |
| 517-867 | JACKSON | 046L | 2016-04-12 | Yes |
| 517-868 | DIMONDALE | 6120 | — | Yes |
| 517-869 | ALLEN | 4417 | — | — |
| 517-872 | RIVES JCT | 817J | 2002-04-22 | — |
| 517-873 | CHARLOTTE | 2550 | 2002-08-12 | — |
| 517-876 | HOLT | 7157 | 2005-07-13 | Yes |
| 517-877 | LITCHFIELD | 6003 | 2003-07-28 | Yes |
| 517-878 | LESLIE | 6120 | 2005-11-28 | Yes |
| 517-879 | JACKSON | 6120 | 2002-05-14 | Yes |
| 517-880 | XXXXXXXXXX | 9323 | — | — |
| 517-881 | LANSING | 6003 | — | — |
| 517-882 | LANSING | 9323 | — | — |
| 517-883 | MASON | 460K | 2008-02-04 | Yes |
| 517-884 | LANSING | 9323 | — | — |
| 517-885 | LANSING | 9323 | — | Yes |
| 517-886 | LANSING | 9323 | — | — |
| 517-887 | LANSING | 9323 | — | — |
| 517-888 | JACKSON | 543C | 2015-08-18 | Yes |
| 517-889 | HOLT | 829J | 2006-01-12 | Yes |
| 517-890 | HANOVER | 3535 | 2002-06-18 | Yes |
| 517-891 | FRONTIER | 3535 | 2002-06-18 | Yes |
| 517-892 | LANSING | 770E | 2023-06-29 | Yes |
| 517-893 | LANSING | 506J | 2022-01-07 | Yes |
| 517-894 | LANSING | 5562 | 2008-03-03 | Yes |
| 517-895 | CONCORD | 3535 | 2002-06-18 | Yes |
| 517-896 | LANSING | 6003 | — | — |
| 517-897 | LANSING | 6003 | — | Yes |
| 517-898 | LANSING | 6003 | — | — |
| 517-899 | LANSING | 6003 | — | — |
| 517-900 | BUNDY HILL | 3535 | 2002-06-18 | Yes |
| 517-901 | READING | 792K | 2007-10-02 | Yes |
| 517-902 | ADRIAN | 2964 | — | Yes |
| 517-903 | BATH | 3535 | 2001-11-15 | Yes |
| 517-905 | JACKSON | 817J | 2001-02-28 | — |
| 517-906 | HOLT | 3535 | 2002-01-21 | Yes |
| 517-907 | CLARKLAKE | 3535 | 2001-11-15 | Yes |
| 517-908 | LANSING | 6120 | — | Yes |
| 517-909 | DANSVILLE | 3535 | 2001-11-15 | Yes |
| 517-910 | ONONDAGA | 6120 | 2006-01-17 | Yes |
| 517-911 | XXXXXXXXXX | MULT | — | — |
| 517-912 | DIMONDALE | 3535 | 2001-11-15 | Yes |
| 517-913 | LANSING | 817J | — | — |
| 517-914 | JACKSON | 2964 | — | Yes |
| 517-915 | FOWLERVL | 3535 | 2001-10-30 | Yes |
| 517-916 | JONESVILLE | 817J | 2001-11-13 | — |
| 517-917 | JACKSON | 2964 | — | Yes |
| 517-918 | ADRIAN | 2964 | — | Yes |
| 517-919 | LAINGSBURG | 6534 | — | Yes |
| 517-920 | ADRIAN | 817J | 2006-02-01 | Yes |
| 517-921 | ADDISON | 3535 | 2001-10-30 | Yes |
| 517-922 | EATON RPD | 3535 | 2001-11-15 | — |
| 517-923 | FITCHBURG | 3535 | 2001-11-15 | Yes |
| 517-924 | COLDWATER | 792K | 2007-01-04 | Yes |
| 517-925 | GRANDLEDGE | 3535 | 2001-11-15 | Yes |
| 517-926 | GRASS LAKE | 3535 | 2001-11-15 | Yes |
| 517-927 | LANSING | 6003 | — | — |
| 517-928 | MASON | 6003 | 2019-04-22 | Yes |
| 517-929 | HOMER | 3535 | 2001-11-15 | Yes |
| 517-930 | LANSING | 6003 | — | Yes |
| 517-931 | TEKONSHA | 991E | — | — |
| 517-932 | ALLEN | 3535 | 2002-06-18 | Yes |
| 517-933 | COLDWATER | 3535 | — | — |
| 517-936 | JACKSON | 6534 | — | Yes |
| 517-937 | JACKSON | 2964 | — | Yes |
| 517-938 | BROOKLYN | 3535 | 2002-06-18 | Yes |
| 517-939 | QUINCY | 6120 | 2007-06-18 | Yes |
| 517-940 | LANSING | 6534 | 2014-07-25 | Yes |
| 517-941 | LAINGSBURG | 3535 | 2001-11-15 | — |
| 517-942 | LESLIE | 3535 | 2001-11-15 | — |
| 517-944 | LANSING | 2964 | — | Yes |
| 517-945 | JACKSON | 829J | — | Yes |
| 517-946 | CAMBRIA | 3535 | 2002-06-18 | Yes |
| 517-947 | HOWELL | 817J | — | — |
| 517-948 | MULLIKEN | 3535 | 2001-11-15 | Yes |
| 517-949 | DE WITT | 3535 | 2001-03-26 | — |
| 517-950 | — | — | ||
| 517-953 | MUNITH | 3535 | 2001-11-15 | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.