What Is a Social Security Number Trace in a Background Check?
The SSN trace is often the first step in a background check. Here's what it does, what it finds, and why it matters for building a complete criminal search.
What an SSN Trace Does
A Social Security Number trace is not a government database lookup — it's a search of credit bureau header data and other commercial databases to identify all names and addresses historically associated with a given SSN.
The output is a list of:
- Names (including maiden names and aliases)
- Addresses (current and historical)
- Dates of use for each address
Why It's the Foundation of a Background Check
The SSN trace drives the criminal search. Criminal court records are indexed by name and jurisdiction — there is no national criminal database that covers all courts. To find criminal records, you need to know where to look.
The SSN trace tells the screening company which counties and states a person has lived in, which determines which jurisdictions to search. Without this step, a criminal record in a state where the candidate once lived might be missed entirely.
What the SSN Trace Can Reveal
Beyond driving the search strategy, an SSN trace can surface useful information on its own:
- Multiple names: If a candidate has used different names (through marriage, divorce, or alias), those names appear and should be searched
- Addresses not disclosed on the application: Candidates sometimes omit past addresses, intentionally or not
- Inconsistencies: If the SSN trace shows addresses in states the candidate never mentioned, it warrants a conversation
What the SSN Trace Does Not Do
An SSN trace does not:
- Run a criminal search itself
- Access government records
- Show medical or financial information
- Verify citizenship or immigration status
- Confirm the SSN is legitimately assigned to the person
SSN Validation vs. SSN Trace
Some providers offer SSN validation — confirming that the SSN provided was actually issued and matches the name and date of birth given. This is different from an SSN trace. Both are useful.
Why Employers Should Always Include It
Skipping the SSN trace and only searching the county where a candidate currently lives creates a significant gap. A candidate who committed a crime in another state before moving won't be found in a single-county search. The trace-driven multi-jurisdictional approach is standard practice for compliant, thorough pre-employment screening.
At Do It Right Screening, an SSN trace is included in every background check package as the foundation for our search strategy. Contact us to learn how we build comprehensive, compliant searches.