---
title: "MC number lookup"
description: "An MC number is the docket number FMCSA assigns with interstate operating authority. Type \"MC 123456\" in the search box above to find the carrier, its USDOT number and whether its authority is active."
canonical: https://mydotcheck.com/mc-number-lookup
last_updated: 2026-10-20
---

# MC number lookup

An MC number is the docket number FMCSA assigns with interstate operating authority. Type "MC 123456" in the search box above to find the carrier, its USDOT number and whether its authority is active.

## How to search by MC number

-   Enter the number with the MC prefix, for example MC 135797, so we know it is a docket number and not a USDOT number
-   We match it to the carrier's USDOT record in the FMCSA census
-   The result opens the carrier's compliance check: USDOT status, authority status, MCS-150 date, safety rating and inspections

## What an MC number tells you

An active MC number means FMCSA granted operating authority to haul regulated freight for hire across state lines. Authority can be revoked, for example when required insurance lapses or a BOC-3 is missing, so check the status, not just that a number exists.

MyDotCheck is an independent service and is not affiliated with, endorsed by, or part of the U.S. Department of Transportation or FMCSA. Data comes from public FMCSA datasets and may lag official records by a day or more. Government filings can be made directly with FMCSA at no charge.

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## MC number lookup questions

### Can I find a USDOT number from an MC number?

Yes. Every MC number is tied to a USDOT record. Search the MC number and we show the USDOT number on the result.

### Why does a carrier have a DOT number but no MC number?

Private carriers and intrastate carriers often need only a USDOT number. MC authority is for for-hire interstate transport of regulated commodities.

---
Canonical URL: https://mydotcheck.com/mc-number-lookup
Title: MC Number Lookup and MC Checker: Find Any Carrier Free