MC Number Lookup
An MC number is the operating-authority identifier the FMCSA issues to for-hire carriers and brokers that move regulated freight across state lines. An MC number lookup confirms a carrier is authorized to haul — and authority status changes fast, so it's worth checking before every new relationship.
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What an MC number confirms
MC (motor carrier) authority is what lets a for-hire carrier or broker legally transport regulated property in interstate commerce. The record shows whether authority is active, pending, or revoked, alongside the linked USDOT number and the carrier's legal name.
USDOT vs. MC — why you check both
A carrier can hold a USDOT number for safety registration but lack active operating authority, or vice versa. Underwriters check both: the USDOT for the safety/fleet profile and the MC for the right to operate. VerifySOS surfaces them together and ties them to the Secretary of State entity.
How to run an MC number lookup
Search the company name on VerifySOS — we resolve the MC and USDOT numbers, operating status, fleet, and ownership into one verification file you can save or attach to a credit decision.
Frequently asked questions
How do I find a carrier's MC number?
Search the company name on VerifySOS; we return the linked MC and USDOT numbers when the carrier holds for-hire authority.
What does revoked MC authority mean?
The carrier's operating authority has been withdrawn — they are not currently authorized to haul for hire. A clear stop-and-verify signal.
Do all carriers have an MC number?
No. Carriers operating only intrastate, or hauling exempt commodities, may have a USDOT number without an MC number.
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