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FMCSA Carrier Census Lookup by USDOT Number
x402
FMCSA Carrier Census Lookup by USDOT Number is a paid API for AI agents from api.companyrecords-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).
Retrieves FMCSA carrier census record (legal name, address, power units, drivers, status, registration dates) for a given USDOT number from the public FMCSA Company Census File.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.
Output
Returns a JSON object with the data source URL, a checkedAt timestamp, and an array of carrier records each containing: DOT number, legal name, city, state, add date, MCS-150 date, power units count, total drivers, status code (e.g. 'I' for inactive, 'A' for active), and carrier operation type.
Example use cases
Carrier vetting before freight tender
“Before I award this load to a new broker's carrier, can you look up USDOT number 1847392 in FMCSA and tell me their legal name, status, and how many trucks they're running?”
Compliance check for shipper audit
“Our compliance team needs to verify the current FMCSA status and registration dates for the carrier with USDOT 598271 — can you pull that from the census file?”
Enriching a carrier database
“I have a list of DOT numbers and need to backfill legal names and addresses — can you start by fetching the FMCSA census record for DOT number 1023456?”
Technical details
Endpoint
GEThttps://api.companyrecords-api.workers.dev/api/gov/fmcsa-carrier-safety?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured census-level data about a US motor carrier — legal name, address, fleet size, driver count, and registration status — given a USDOT number. It is ideal for carrier vetting, compliance enrichment, and database backfill. Note: this endpoint serves census file data only, not real-time inspection history, safety ratings, or crash data; for those, use FMCSA Safety Measurement System (SMS) endpoints instead.
Side effects
- Invalid or non-existent USDOT number returns an empty carriers array
- Non-digit characters in the DOT number field cause a validation error
- USDOT numbers longer than 8 digits are rejected
- Upstream data.transportation.gov outage may cause timeout or error response
- Census file data may lag behind live FMCSA records for recently updated carriers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "https://data.transportation.gov/resource/az4n-8mr2.json",
"carriers": [
{
"city": "WISCONSIN RAPIDS",
"state": "WI",
"addDate": "19870610",
"dotNumber": "295043",
"legalName": "HAROLD DAVIS TRUCKING INC",
"mcs150Date": "20020318",
"powerUnits": 14,
"statusCode": "I",
"totalDrivers": 13,
"carrierOperation": "A"
}
],
"checkedAt": "2026-10-23T09:37:04.365Z"
}
}Tags
x402
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