Guide

What a USDOT number is, and how to find one

Last updated 2026-08-05

A USDOT number is the identifier the Federal Motor Carrier Safety Administration assigns to a commercial motor carrier. It is a plain serial number — six or seven digits, no letters — and it is attached to the company, permanently. Safety inspections, crash reports, insurance filings, compliance reviews and consumer complaints all file against it.

For someone hiring an interstate mover, it matters for one practical reason: it is the only piece of identifying information about a moving company that cannot be changed by marketing. Company names change. Websites change. Phone numbers change. A USDOT number follows the registered entity.

Who is required to have one

Any company operating commercial vehicles to transport cargo across state lines in interstate commerce has to register with FMCSA and receive a USDOT number. That covers essentially every legitimate interstate household goods mover. FMCSA publishes its own test for who must register, and a number of states additionally require intrastate carriers to obtain one.

Where to find a mover’s USDOT number

In roughly the order they're easiest to get at:

• On the truck. Federal rules require the USDOT number to be displayed on both sides of a self-propelled commercial vehicle, legible from 50 feet, along with the name the carrier operates under.
• On the estimate, the bill of lading, or the contract. It generally appears in the header alongside the company's legal name.
• In the website footer or the "about" page. Most established movers publish it; many advertise it.
• By asking. "What's your USDOT number?" is an ordinary question and a legitimate carrier answers it immediately.

What to do with it once you have it

Search it. Not the company name — the number. Name searches are where people go wrong, because a search for "Allied Moving" returns a long list of unrelated companies using similar branding, and picking the wrong one gives you a clean record belonging to somebody else.

On the record itself, the fields that actually decide whether a company can legally move your household across state lines are the operating authority status, whether that authority covers household goods, the insurance filings on record, and whether an out-of-service order is in force. The five-minute check walks through all four in order.

When a company won’t give you one

Take it seriously. There are innocent explanations — you may be talking to a salesperson at a broker, which arranges moves rather than performing them, and brokers hold a different kind of authority than the carrier who will actually show up. That's worth untangling: ask which USDOT number will be on the truck, and check that one.

But a company that performs interstate moves, is asked directly for its USDOT number, and declines to give it is telling you something. So is a number that turns out to belong to a company with a different name, or to a carrier whose authority was revoked years ago. Both are checkable in about a minute, before any money changes hands.

Numbers that look similar but aren’t

• MC number (docket number). A separate federal number that records a carrier's permission to haul for hire, usually written with an "MC" prefix. A company can hold a USDOT number without a valid MC number, and that gap is meaningful — the difference is worth understanding.
• State registration or intrastate permit numbers. Issued by a state agency, valid only for moves within that state, and no substitute for federal interstate authority.
• Association or trade-group membership numbers. Private memberships. They carry no regulatory meaning whatsoever.