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SSNChecker Social Security Number verification and lookup

Is 173-20-0001 a valid SSN?

173-20-0001 looks valid in the public record. The likely issue location is Pennsylvania (PA), and the year range is 1941 to 1953.

Check a Social Security number

Enter any 9-digit SSN to check format, likely issue location, and the published issue-year range.

Formats like `001010013` and `001-01-0013` both work.

Is 173-20-0001 a valid SSN?

Valid

173-20-0001 looks valid in the public record. The likely issue location is Pennsylvania (PA), and the year range is 1941 to 1953.

Status

Valid

Matches the public SSA record.

Issue location

Pennsylvania (PA)

Based on the first three digits of the SSN.

Issue years

1941 to 1953

Estimated first and last year for this number range.

Lookup details
SSN
173-20-0001
Area number
173
Group number
20
Serial number
0001
Last published group
86
Record window
before November 2003

What this result means

173-20-0001 fits the published pre-randomization record. The area points to Pennsylvania (PA), and the published group history supports an issue range of 1941 to 1953.