There are 3 types of checks that can capture this type of offender. As a general rule, combining all of the below checks is the best way to capture as many offenders as possible, by searching all the relevant geographical areas and databases.
Sex Offender Report
As long as the 'offender' registers wherever they're living (as legally required), the Sex Offender Registry is fully conclusive and up to date with all of the country's sex offenders.
County Criminal Report
Based on where a person's been registered to live (via SSN Trace), we will search for any crime committed by the person, at the county level. This report will confirm (with certainty) all crimes against the state, county, city etc. Please note, civil cases are not included in this report (e.g, wrongful death, divorces, evictions etc). A single CCR will search the latest/current county. An unlimited CCR will search all registered addresses (counties) in the last 7 years. In both cases, the reports go back 7 years, in accordance with regulation.
National Criminal Report
Irrespective of someone's registered addresses, the NCR will/can capture both of the above cases, but can also include any crimes committed outside of the registered counties. The National Criminal Database is not a conclusive database and holds around 50-60% of all crimes committed.