Can I look up a carrier with just a DOT number?

Yes. Enter either number here and you'll get the same carrier record — authority status, insurance on file, safety rating, and out-of-service status. If a carrier holds both, we'll show you both, which is also the fastest way to confirm the two numbers belong to the same company.

Does every trucking company need an MC number?

No. Carriers operating only within a single state, and private fleets hauling their own goods, may legitimately have a USDOT number and no operating authority. A carrier offering to haul your interstate freight for hire, however, needs active authority.

What does 'authority revoked' mean?

FMCSA has withdrawn the company's permission to operate for hire in interstate commerce — commonly for failing to maintain required insurance on file, but there are other causes. A carrier with revoked authority should not be hauling your regulated interstate freight, and booking one exposes you if something goes wrong.

Is the MC number the same as an FF or MX number?

They're issued from the same docket system but mean different things. MC is a motor carrier or broker, FF is a freight forwarder, and MX is a Mexico-domiciled carrier. The prefix matters, so read it rather than assuming.

Where does this information come from?

All of it comes from FMCSA's public records — the same authority, insurance filing, safety rating, and inspection data the government publishes. We read it directly and present it in one place, then explain what the risk factors mean.

Explainer

MC Number vs USDOT Number — What Each One Actually Proves

They get used interchangeably in conversation, and they shouldn't be. A USDOT number identifies a company for safety purposes and follows it through inspections, crashes, and audits. An MC number is operating authority — permission to haul regulated freight for hire across state lines. A carrier can hold both, or a DOT number alone, and the difference tells you something real about who you're about to book.

Check a carrier now

Have one number and not the other? Enter either an MC or a DOT number and we'll pull the same carrier record — free, no account.

Just the number works — with or without the MC/DOT prefix, and spaces are fine. Tip: prefix an MC number with “MC” (e.g. MC123456) so it isn't read as a DOT number.

Demo:— click to see a sample result + PDF

The short version

USDOT number — identity and safety. A unique identifier assigned to a company operating commercial vehicles. It's the key everything else hangs off: inspections, violations, crash reports, out-of-service events, and safety ratings all attach to it. Having one means the company is registered and being tracked. It does not mean the company is allowed to haul your freight for hire.
MC number — permission to operate. Motor carrier operating authority, issued to companies hauling regulated freight for hire in interstate commerce. This is the one that can be active, pending, revoked, or reinstated — and the state it's in on the day you book is what matters.

The practical way to hold it: the DOT number tells you who they are and how they've been driving. The MC number tells you whether they're allowed to be doing this at all.

Why a carrier might have one and not the other

Not every legitimate operation needs operating authority. A carrier hauling only within one state may operate intrastate under state rules without interstate authority. A private fleet — a company moving its own goods in its own trucks — needs a DOT number but has no reason to hold for-hire authority, because it isn't hauling for anyone else. Both are perfectly normal.

What isn't normal is a company offering to haul your interstate freight for money without active operating authority. That's the case worth catching, and it's the reason the distinction matters commercially rather than academically.

What each one tells you before you book

If you only look at one, look at the authority status — but you'd be leaving most of the picture behind. Here's what each number opens up:

From the MC number. Whether authority is active, and whether it's ever been revoked and reinstated. Repeated revocation and reinstatement is a pattern worth asking about. Authority granted very recently means there's no track record yet — not disqualifying, but it changes what you're relying on.
From the USDOT number. Inspection history, out-of-service rate against the national average, crash history, and the safety rating if one has been assigned. This is where a carrier's actual behavior lives.
From both together. Whether the company on the record matches the company that contacted you. Name, address, and phone mismatches between the record and the person emailing you are one of the most common fraud tells there is.

The mistake that actually costs money

The expensive error isn't confusing the two numbers. It's treating either one as a one-time check. Authority can be revoked next week. Insurance can lapse between loads. The carrier you vetted in March is not necessarily the carrier you're booking in September, and nothing tells you it changed unless something is watching the record.

That's the difference between vetting a carrier once and monitoring one. Both numbers stay the same; what they point to doesn't.

Common questions

Can I look up a carrier with just a DOT number?: Yes. Enter either number here and you'll get the same carrier record — authority status, insurance on file, safety rating, and out-of-service status. If a carrier holds both, we'll show you both, which is also the fastest way to confirm the two numbers belong to the same company.
Does every trucking company need an MC number?: No. Carriers operating only within a single state, and private fleets hauling their own goods, may legitimately have a USDOT number and no operating authority. A carrier offering to haul your interstate freight for hire, however, needs active authority.
What does 'authority revoked' mean?: FMCSA has withdrawn the company's permission to operate for hire in interstate commerce — commonly for failing to maintain required insurance on file, but there are other causes. A carrier with revoked authority should not be hauling your regulated interstate freight, and booking one exposes you if something goes wrong.
Is the MC number the same as an FF or MX number?: They're issued from the same docket system but mean different things. MC is a motor carrier or broker, FF is a freight forwarder, and MX is a Mexico-domiciled carrier. The prefix matters, so read it rather than assuming.
Where does this information come from?: All of it comes from FMCSA's public records — the same authority, insurance filing, safety rating, and inspection data the government publishes. We read it directly and present it in one place, then explain what the risk factors mean.

Sources

1.SAFER Company Snapshot (free public motor-carrier record) — FMCSA
2.Do I need a USDOT number? — FMCSA
3.Licensing & Insurance (L&I) public filings — FMCSA

Look up an MC number →Look up a DOT number →How to check operating authority →The before-you-tender checklist →Why one-time vetting isn't enough →

CarrierClear displays public FMCSA records and records your own verification. It is not legal advice and not a certification of any carrier’s fitness, legitimacy, or insurance. Verify independently before relying on any record. Comparisons reflect our understanding of publicly available information as of the date shown and may change; CarrierClear is not affiliated with, endorsed by, or sponsored by any other company named here, and all trademarks belong to their respective owners.