USDOT & MC Sequence Radar
USDOT Range Explorer
Scan consecutive MC or USDOT numbers across live census batches. Spot active carriers, find unassigned number gaps, and view verified carrier contact info in seconds.
Data Source: Official U.S. DOT / FMCSA Census Records•Updated: September 28, 2026
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Understanding FMCSA Sequential Records & Identifiers
1. Chronological AllocationMC and USDOT numbers are sequential national integers assigned at the time of federal filing. They are not partitioned by state or geographical region.
2. Census vs. Authority StatusUSDOT Safety Registration (MCMIS Census) and Operating Authority (MC/FF/MX Dockets) are distinct regulatory authorizations maintained in separate systems.
3. Dataset Snapshot AttributionAll records resolve from the United States Department of Transportation MCMIS open data export.