The FMCSA carrier database contains records for over 4.4 million registered motor carriers in the United States. Knowing how to search it correctly — and which search method to use — is essential for freight brokers, shippers, and logistics professionals who need to verify carriers before booking loads.
This guide covers the three ways to search for a carrier in the FMCSA system: by DOT number, by MC number, and by company name. Each has different use cases, limitations, and tradeoffs.
Use CarrierCheck to run any FMCSA carrier search — by DOT number, MC number, or email. It pulls the same data as the official FMCSA SAFER system but shows everything on one page, instantly.
Searching by USDOT Number
The USDOT number is the most reliable way to search for a carrier. Every commercial motor vehicle operating in interstate commerce is assigned a unique USDOT number by the FMCSA. It never changes, even if the carrier changes their company name, address, or MC number status.
When to use it: When the carrier has given you their DOT number, or when you already know it. This is the most direct and unambiguous search — one DOT number returns exactly one carrier record.
USDOT Number Search
Go to CarrierCheck, select "DOT Number" from the dropdown, enter the number, and click Search. The full FMCSA record appears in under 2 seconds — authority status, insurance, safety rating, fleet data, and contact information.
Searching by MC Number
The MC number (also called a docket number) is assigned to carriers that transport regulated commodities for hire in interstate commerce. Not all carriers have an MC number — private carriers and some exempt carriers only have a USDOT number.
When to use it: When you're verifying a for-hire carrier's operating authority and you have their MC number. The MC number specifically confirms interstate for-hire authority, which is the most important field for brokers to check.
MC Number Search
Go to CarrierCheck, select "MC Number" from the dropdown, enter the number (digits only — no "MC" prefix needed), and click Search. You'll see authority status, insurance, and the full FMCSA carrier profile.
See also: MC Number Lookup Guide and MC Number vs DOT Number — What's the Difference?
Searching by Company Name
Searching for a carrier by company name is the least reliable method and the most prone to errors. Here's why:
- Multiple carriers share similar names — There are thousands of carriers in the US. Common names like "Express Trucking LLC" or "American Transport" return dozens of results.
- Carriers use different legal and DBA names — The name on the load board may be a DBA (doing business as) name while the FMCSA record uses the legal entity name. These often don't match.
- Fraudsters intentionally mimic legitimate carrier names — A carrier identity thief may use a name one letter different from a real carrier to pass casual inspection.
Never rely on company name alone. Always get the carrier's DOT or MC number and search that directly. A name match is not a verification — it's a starting point.
The correct process when you only have a company name:
- Ask the carrier directly for their DOT or MC number. Any legitimate carrier can provide this immediately.
- Search the DOT or MC number on CarrierCheck. Confirm the legal name in the results matches the name they gave you.
- If names don't match, investigate before booking. A mismatch could indicate a name change (check authority history) or attempted fraud.
What FMCSA Carrier Search Results Show
A full FMCSA carrier search on CarrierCheck returns the following data fields:
- Legal name and DBA name — the registered and operating names
- Operating authority status — Active, Inactive, or None, with the date authority was granted
- Insurance on file — type, coverage amount, insurer, and any pending cancellation notices
- FMCSA safety rating — Satisfactory, Conditional, Unsatisfactory, or Not Rated
- Inspection history — number of inspections, driver OOS rate, vehicle OOS rate
- Fleet data — power units, trailers, total drivers
- Physical and mailing address — on file with FMCSA
- Phone and email — FMCSA-registered contact information
- Cargo types authorized — what types of freight this carrier is registered to haul
- Authority history — previous revocations, reinstatements, and docket actions
FMCSA SAFER Web vs CarrierCheck
Both tools search the same FMCSA database. The difference is the interface:
- FMCSA SAFER Web — official government tool, data split across multiple pages, no mobile optimization, no export function
- CarrierCheck — same FMCSA data, all fields on one page, mobile friendly, CSV export, daily sync, free
For everyday carrier verification, CarrierCheck is faster and easier. For official compliance documentation that requires a government URL, SAFER Web is the appropriate source.
Tips for Accurate FMCSA Carrier Searches
- Always verify the contact information — Compare the phone number and address the carrier gave you against the FMCSA record. Any discrepancy is a red flag for identity theft.
- Check authority age, not just status — Active authority under 6 months old is a higher-risk signal. Many fraud operations use newly registered carrier identities.
- Look for pending insurance cancellations — A carrier may have active authority but insurance about to lapse. Don't book loads with a pending cancellation on file.
- Search both DOT and MC numbers when available — Cross-referencing both confirms the records match and reduces the chance of identity theft going undetected.
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