Wisconsin SSN lookup
Area numbers assigned to Wisconsin fell in these old-system blocks: 387-399. Use this page to see which prefixes matched Wisconsin and then check an individual number.
387-399
Published area blocks tied to this lookup page.
13
Distinct area numbers in this assignment block.
Location match
Use these prefixes to see whether the first three digits point to Wisconsin before you run a full lookup.
The first three digits of an old-style SSN could point to Wisconsin when they fell inside one of these published ranges.
387-399
Areas 387 through 399
These rows show the issued area and group combinations linked to Wisconsin. Open any pattern as a full lookup by swapping in the last four digits.
| Social Security number | First year | Last year | Likely age today | Status |
|---|---|---|---|---|
| 387-01-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-03-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-05-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-07-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-09-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-10-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-12-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-14-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-16-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-18-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-20-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-22-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-24-#### | 1936 | 1950 | 76 to 108 yrs | Valid |
| 387-26-#### | 1937 | 1951 | 75 to 107 yrs | Valid |
| 387-28-#### | 1939 | 1952 | 74 to 105 yrs | Valid |
| 387-30-#### | 1940 | 1953 | 73 to 104 yrs | Valid |
| 387-32-#### | 1942 | 1954 | 72 to 102 yrs | Valid |
| 387-34-#### | 1943 | 1955 | 71 to 101 yrs | Valid |
| 387-36-#### | 1945 | 1956 | 70 to 99 yrs | Valid |
| 387-38-#### | 1947 | 1957 | 69 to 97 yrs | Valid |
| 387-40-#### | 1948 | 1958 | 68 to 96 yrs | Valid |
| 387-42-#### | 1950 | 1960 | 66 to 94 yrs | Valid |
| 387-44-#### | 1952 | 1961 | 65 to 92 yrs | Valid |
| 387-46-#### | 1953 | 1962 | 64 to 91 yrs | Valid |
| 387-48-#### | 1955 | 1963 | 63 to 89 yrs | Valid |
| 387-50-#### | 1957 | 1964 | 62 to 87 yrs | Valid |
| 387-52-#### | 1958 | 1965 | 61 to 86 yrs | Valid |
| 387-54-#### | 1960 | 1966 | 60 to 84 yrs | Valid |
| 387-56-#### | 1962 | 1967 | 59 to 82 yrs | Valid |
| 387-58-#### | 1963 | 1969 | 57 to 81 yrs | Valid |
If an SSN starts with one of the prefixes above, Wisconsin is a likely issue location under the old system.
To check the number further, run the full nine digits through the checker. The result page can then tell you whether the group fits the published record and what year range the number most likely falls into.
Example old-style prefix for this page: 387-01-0001
Enter a full SSN to check whether it fits the old record for Wisconsin.