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MC Number Lookup & Check

An MC number lookup verifies a carrier or broker’s FMCSA operating authority. Enter an MC number, USDOT number, or company name below to check whether the authority is active and see the linked USDOT record, status, and contact details - free.

How to check an MC number

Enter the MC number (with or without the “MC-” prefix) in the search box. Open the result to confirm whether the carrier or broker holds active operating authority and to view the linked USDOT number, address, and officers.

What MC operating authority means

Operating authority (the MC/MX/FF docket) is FMCSA permission to transport regulated commodities for hire in interstate commerce. Authority can be common, contract, or broker. A carrier must hold active authority and the required insurance to operate legally for hire.

MC number vs. USDOT number

Every for-hire interstate carrier needs a USDOT number; those hauling regulated freight also need MC authority. Use the USDOT number lookup to search by DOT number, or the DOT status check to confirm active authority.

Frequently asked questions

What is an MC number?

An MC (Motor Carrier) number, also called a docket number, is issued by the FMCSA and represents a carrier’s or broker’s authority to operate for hire in interstate commerce. Related prefixes include MX and FF.

How do I check if an MC number is active?

Search the MC number above and open the record - dotsearch.us shows the operating authority status (Authorized / Not Authorized) derived from the live FMCSA authority data.

Is MC number lookup free?

Yes, checking an MC number and viewing the carrier’s full record is free and requires no signup.

What is the difference between MC and DOT numbers?

The USDOT number identifies the carrier for safety and registration; the MC number grants for-hire operating authority. Many carriers hold both.

Example lookups

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