Find all MC (docket) numbers linked to a mover's USDOT number via the FMCSA QCMobile API
domain: mobile.fmcsa.dot.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Get a FMCSA Developer WebKey via the Login.gov signup flow described on mobile.fmcsa.dot.gov/QCDevsite.
Call GET https://mobile.fmcsa.dot.gov/qc/services/carriers/{dotNumber}/docket-numbers?webKey=YOUR_WEB_KEY.
Review the returned list of docket/MC numbers associated with that single USDOT number.
Use this to reconcile cases where a mover quotes one MC number in its contract but is filed under a different or additional docket number in FMCSA's system.
Flag mismatches for manual review before finalizing a vendor or partner agreement with the carrier.
Known gotchas
Moving brokers and van-line agents often operate under a parent carrier's USDOT number while marketing a different trade name and MC number — this endpoint helps but doesn't itself distinguish broker vs. carrier authority (use the /authority endpoint for that).
A carrier with multiple docket numbers from historical mergers can confuse simple 'one DOT number = one MC number' assumptions in downstream systems.
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