The social security number background check is usually the beginning in most investigations. Checking a subjects social security number background check information online from public records nationwide helps establish a profile of the subject. The data obtained from this phase of a background check is used to help answer, confirm or guide you to the next step in a complete investigation of a subject or suspects background. New relationship social security number background checks, Tenant social security number background checks or criminal investigations all usually begin with this step. Investigators don't always find something new in every spot they look but good Investigators always look anyway. If this is your first case, jump in and get your feet wet. Welcome to detective work. What's Next?