AI summary
A USDOT number is FMCSA's identifier for covered motor carriers in federal safety-registration records. The FMCSA Company Census snapshot dated 2026-06-25 contains 4,457,540 records and supplies the dated context for this definition. A USDOT number is not an operating-authority grant, safety conclusion, or quality ranking.
Each receipt below describes its exact retained artifact or live source. Dates and digests never cross artifact boundaries.
Evidence publisher: Federal Motor Carrier Safety Administration. Source date: 2026-06-25.
Retained artifact creator: Fonteum LLC. Generated 2026-07-21. Based on: FMCSA Company Census File by Federal Motor Carrier Safety Administration.
Scope and material limitation
This answer distinguishes carrier safety registration from operating authority and uses the committed census snapshot only for aggregate context.
Dated source facts
Source-snapshot manifest receipt
This receipt attests the source snapshot manifest, not any individual fact.
The answer-series chain record is unsigned. It does not authenticate a person, organization, eligibility state, or individual fact.
5cb2ad6b847a7e4d3691d9f5da5b1c0bd67f67675ebd5cd2781cf94635bc8c290ab06861c1ebf17a4dea627b2d1851a94fea8ba5e8d977e45fec4a5bf7f9e2cb30b26e137506c9d5edefcc1fcbccfce76aa0f3a0ee576b71e1cdb58df005012a0unsignedPrimary-source chain
Limitation: Counts are census records and registration-status rows, not unique companies, current operating-authority decisions, business closures, or quality rankings.
Re-derive this answer from the named source and dated scope; no Fonteum account is required.
Methodology and limitations
Frequently asked questions
What’s on file, by the numbers
Platform snapshot · 2026-08-13
Integrated, with-data, and fresh-observation counts are separate. No platform-wide source-completeness count is published. Completeness is source-specific and must be evaluated against the named source's expected scope. State coverage is a separate jurisdiction measure.
Source authority is record-specific
Use the issuer named on the record.
Fonteum spans federal, state, and global public publishers. A source page or returned record identifies its issuer and dataset where that metadata is available. A platform registry count does not assign every page to one authority or establish loaded, fresh, or complete coverage.
Reproducible by design
Inspect the evidence each published figure actually supplies.
Source and date
Research pages expose the named public file and observation date where those fields are available. Source-file SHA-256 coverage is separate; facts do not currently link deterministically to signatures.
Available derivation
Studies with a retained release and committed derivation link the SQL or method used. Other studies state the evidence and reproduction limits they actually have.
Daily observations
Dated table row-count observations can detect local drift. They do not imply that an upstream publisher released or Fonteum ingested new data that day.
Named medical review
Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.