Enumeration at Entry SSN lookup

The first three digits of an old-style SSN could point to Enumeration at Entry when they fell inside one of these published ranges.

These rows show the issued area and group combinations linked to Enumeration at Entry. Open any pattern as a full lookup by swapping in the last four digits.

This page covers issued SSN patterns for Enumeration at Entry from 731-01-#### to 732-28-####. If you are scanning older prefixes or comparing issue-year ranges, this gives you a faster way to narrow the search.

Each row represents a valid issued area and group combination under the old system. Open any row to run a full number check and see the likely location and year range.

If an SSN starts with one of the prefixes above, Enumeration at Entry 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: 729-01-0001