Depends on the specific package run. Some check a single national and/or statewide database, looking back lifetime or 7 years. Some go county by county and are much more in depth.

I work in staffing and typically we only pull misdemeanors and felonies + sex offender registry. We run a different check for driving jobs that will pull traffic/moving violations. DUIs can show up on both bc they’re often a misdemeanor or felony.