Free MC number to USDOT number lookup
Got an MC number from a rate confirmation and need the USDOT number? Enter it below. No sign-up, no payment.
Free identity screen
Already have the USDOT number? This checks whether the carrier shares contact identifiers with other registrations under FMCSA's own published chameleon-carrier threshold. It returns a flag and counts only; it never names another carrier.
About these results
- The lookup reads FMCSA's public records. Each answer states the date its records are current as of. It is not live.
- FMCSA stopped updating its legacy licensing archive on 2026-05-14. When a docket status comes from that archive, the result says so, and the status describes that date. Confirm current authority with FMCSA before relying on it.
- A flag from the identity screen is a data pattern, not a finding of fraud. In a hand review of flagged clusters, a third were legitimate affiliated fleets. Use it to decide what to look at next.
- This page makes the same free calls as the API, limited to 60 requests a minute per IP address. This page sets no cookies and runs no analytics. The service's own operational logs are covered by the Privacy Policy.
To go further, see the API documentation, pricing, or request a free evaluation key.