DOT Number Lookup: How to Check Any Carrier's Safety Record

Every commercial motor carrier operating in the United States is assigned a unique USDOT number by the Federal Motor Carrier Safety Administration (FMCSA). This number is more than just an identifier — it is the key to unlocking a carrier's entire safety history, operating authority, insurance coverage, and compliance record. Whether you are a shipper vetting a new carrier, a broker verifying a partner, or a fleet manager keeping tabs on your own standing, knowing how to perform a DOT number lookup is an essential skill.

The good news is that FMCSA makes this data available to the public at no cost. In this guide, we will walk through exactly how to look up any DOT number, what the results mean, and how to use that information to make informed decisions about the carriers you work with.

What Is a USDOT Number?

A USDOT number is a unique identifier assigned by FMCSA to every commercial motor carrier, freight broker, freight forwarder, and certain other entities engaged in interstate commerce. Think of it as a carrier's federal ID number — it ties together all of the safety data, inspection results, crash records, and compliance history that FMCSA maintains on that operation.

The USDOT number is required for any company that operates commercial motor vehicles (CMVs) transporting passengers or hauling cargo in interstate commerce. This includes vehicles with a gross vehicle weight rating (GVWR) of 10,001 pounds or more, vehicles designed to transport more than 8 passengers for compensation or more than 15 passengers without compensation, and any vehicle used to transport hazardous materials in quantities requiring placarding.

Many states also require a USDOT number for intrastate operations, even if the carrier never crosses state lines. The number must be displayed on both sides of every CMV the carrier operates, along with the carrier's legal name or trade name.

How to Look Up a DOT Number (Step-by-Step)

FMCSA provides a free public tool called the SAFER (Safety and Fitness Electronic Records) system that anyone can use to look up carrier information. Here is how to use it:

Step 1: Visit the SAFER System

Navigate to ai.fmcsa.dot.gov in your web browser. This is FMCSA's official carrier lookup portal. You do not need to create an account or log in to perform a basic search.

Step 2: Choose Your Search Method

On the SAFER homepage, click on "Company Snapshot." You will be presented with several search options:

• USDOT Number — The most direct and reliable method. Enter the carrier's USDOT number to pull up their exact record.
• MC/MX Number — If you have the carrier's legacy MC or MX number, you can still search by it.
• Company Name — Search by the carrier's legal or trade name. This may return multiple results if the name is common.

Step 3: Review the Company Snapshot

After entering your search criteria, FMCSA will display the carrier's Company Snapshot page. This page contains a wealth of information organized into several sections, including the carrier's identity, operating status, safety record, and insurance coverage.

Step 4: Dig Deeper into Safety Data

From the Company Snapshot, you can click through to view detailed inspection results, crash reports, and safety measurement data. For a more detailed safety analysis, navigate to FMCSA's SMS (Safety Measurement System) at ai.fmcsa.dot.gov/SMS, where you can view the carrier's full CSA (Compliance, Safety, Accountability) profile.

What Information Does a DOT Number Lookup Show?

A USDOT number lookup through the SAFER system reveals a comprehensive profile of the carrier. Here is a breakdown of what you will find:

Operating Status and Authority

The most critical piece of information is the carrier's operating status. This tells you whether the carrier is currently authorized to operate. You will see one of several designations: "AUTHORIZED" means the carrier is in good standing; "NOT AUTHORIZED" means they have lost or never obtained the right to operate; and "OUT OF SERVICE" means the carrier has been ordered to cease operations due to safety violations.

Safety Rating

If FMCSA has conducted a compliance review of the carrier, you will see a safety rating: Satisfactory, Conditional, or Unsatisfactory. A Satisfactory rating indicates the carrier meets all safety requirements. A Conditional rating means deficiencies were found but the carrier can still operate. An Unsatisfactory rating is serious — the carrier may face an operations shut-down order. Many carriers, particularly smaller ones, have no rating at all because they have not yet been reviewed.

Inspection and Crash History

The Company Snapshot shows the carrier's inspection results over the past 24 months, including the total number of inspections, the number that resulted in out-of-service (OOS) orders, and the OOS rate compared to the national average. You will also see crash data, including the total number of crashes, injuries, and fatalities reported during the same period.

Insurance and Financial Responsibility

FMCSA displays the carrier's insurance information, including their BIPD (Bodily Injury and Property Damage) insurance status. You can verify whether the carrier's insurance is currently on file and whether the required coverage amounts are met. For carriers hauling hazardous materials or passengers, higher minimum coverage amounts apply.

Fleet Size and Cargo Types

The snapshot includes the carrier's self-reported fleet size (power units and drivers), the types of cargo they are authorized to haul (general freight, household goods, hazmat, etc.), and their type of operation (interstate, intrastate, or both). This information comes from the carrier's most recent MCS-150 filing.

Company Details

You will also find the carrier's legal name, DBA (doing business as) name, physical address, mailing address, phone number, and the date of their most recent MCS-150 update. If the MCS-150 date is more than two years old, that is a red flag — the carrier may be out of compliance with their biennial update requirement.

How to Check a Carrier's Safety Record

While the Company Snapshot provides a high-level overview, FMCSA's Safety Measurement System (SMS) gives you much deeper insight into a carrier's safety performance. The SMS is the backbone of the CSA (Compliance, Safety, Accountability) program, which uses data from roadside inspections, crash reports, and investigations to evaluate carrier safety.

Understanding CSA Scores

CSA scores are organized into seven BASICs (Behavior Analysis and Safety Improvement Categories):

• Unsafe Driving — Speeding, reckless driving, improper lane changes, texting while driving
• Hours-of-Service Compliance — HOS violations, logbook falsification, operating beyond allowed hours
• Driver Fitness — Invalid CDL, lack of medical certificate, insufficient training
• Controlled Substances/Alcohol — Impaired driving, positive drug or alcohol test results
• Vehicle Maintenance — Brake defects, tire issues, lighting problems, cargo securement failures
• Hazardous Materials Compliance — Improper handling, labeling, or documentation of hazmat loads
• Crash Indicator — History of DOT-reportable crashes weighted by severity

Each BASIC receives a percentile score from 0 to 100, where higher numbers indicate worse performance relative to peer carriers. Scores above certain thresholds (typically 65% for most categories) trigger FMCSA intervention. For a complete walkthrough, see our guide on how to look up CSA scores.

Reviewing Inspection History

From the SMS portal, you can drill down into individual inspection reports. Each report shows the date, location, inspection level, violations found, and whether the driver or vehicle was placed out of service. Pay close attention to the out-of-service rate — if a carrier's OOS rate is significantly above the national average (roughly 21% for vehicles and 6% for drivers), it suggests systemic maintenance or compliance issues.

For more information on what happens during a roadside inspection, read our guide to DOT roadside inspections.

How to Apply for a USDOT Number

If you are starting a new trucking company or any business that operates commercial motor vehicles, you will need to register for a USDOT number before your first load. Here is an overview of the process:

1. Determine your registration requirements. Identify whether you need a USDOT number only (for private carriers) or a USDOT number plus operating authority (for for-hire carriers, brokers, and freight forwarders).
2. Gather your information. You will need your EIN (Employer Identification Number), business entity details, principal place of business address, information about your operations (fleet size, cargo types, radius of operations), and designated process agent information (BOC-3).
3. Register online through FMCSA's Unified Registration System (URS). Visit fmcsa.dot.gov/registration and create a login.gov account. Complete the registration application, which includes the MCS-150 form and any required operating authority applications.
4. Obtain required insurance. File proof of financial responsibility (BMC-91 for surety bonds or BMC-34 for trust fund agreements, plus insurance filings). Your insurance provider files these directly with FMCSA.
5. File your BOC-3. Designate process agents in each state where you operate. This can be done through a blanket filing service.
6. Wait for authority activation. New operating authority requires a mandatory waiting period (typically 10-20 business days) before it becomes active.

For a complete walkthrough of everything you need to start a trucking company, including the USDOT registration process, see our new trucking company checklist.

USDOT Number vs MC Number

For decades, the trucking industry operated with two separate identification systems: the USDOT number and the MC (Motor Carrier) number. The USDOT number served as the safety and compliance identifier, while the MC number was the operating authority identifier for for-hire carriers. This dual system created confusion and administrative burden for carriers who had to track and display both numbers.

In October 2025, FMCSA officially eliminated the MC number system and consolidated all carrier identification under the USDOT number. Carriers no longer receive new MC numbers, and all operating authority is now tied directly to the USDOT number. Existing MC numbers remain on record for historical reference, but they are no longer required for operations.

This change means that a DOT number lookup is now the single source of truth for both safety data and operating authority. You no longer need to cross-reference MC numbers. For the full details on this transition, read our article on FMCSA's elimination of MC numbers in 2026.

When to Use a DOT Number Lookup

A DOT number lookup is not just a one-time exercise — it should be a regular part of your operational workflow. Here are the most common scenarios where performing a lookup is essential:

Hiring or Contracting with Carriers

Before you hire a carrier to haul your freight, verify their USDOT number to confirm they have active operating authority, adequate insurance coverage, and an acceptable safety record. This due diligence protects you from liability and ensures your cargo is in safe hands. Many shippers and brokers make this a mandatory step in their carrier onboarding process.

Vetting Freight Brokers

Brokers are also required to have a USDOT number and operating authority. If you are an owner-operator or small carrier working with a new broker, look up their DOT number to verify they are a legitimate, authorized operation with active bond coverage.

Shipper Due Diligence

Under the FMCSA's negligent selection theory, shippers can be held liable if they hire a carrier with a poor safety record and that carrier is involved in an accident. Performing a DOT number lookup before tendering a load is a straightforward way to demonstrate that you exercised reasonable care in selecting your carrier.

Insurance Verification

The SAFER system shows whether a carrier's insurance is currently on file with FMCSA. If you see a lapse or an insufficient coverage amount, that is a clear signal to ask questions before moving forward. Operating without valid insurance is a federal violation.

Checking Your Own Record

Fleet managers should regularly look up their own USDOT number to verify that the public-facing data is accurate. Incorrect information — such as an outdated address, wrong fleet size, or stale MCS-150 date — can raise red flags with potential customers and even trigger FMCSA scrutiny.

Keeping Your DOT Record Clean

Your DOT record is public, and every shipper, broker, and insurance company you work with can see it. Maintaining a clean record is not just about avoiding fines — it directly affects your ability to win and retain business. Here are the key steps to keeping your record in good shape:

File Your MCS-150 Biennial Update on Time

Every carrier must update their MCS-150 form every two years. An outdated filing date is one of the first things experienced shippers check when evaluating a carrier. It signals a lack of attention to compliance. For filing instructions and due date calculation, see our MCS-150 biennial update guide.

Maintain Strong Inspection Performance

Roadside inspections directly feed into your CSA scores and your public record. Implement a rigorous pre-trip inspection program, keep your vehicles well-maintained, and ensure your drivers are trained on common inspection points. High out-of-service rates will hurt you in CSA scoring and can deter potential customers. Our DOT roadside inspection guide covers what to expect and how to prepare.

Monitor Your CSA Scores Monthly

CSA scores are updated monthly. Set a calendar reminder to check your scores on the SMS portal. If you see a BASIC category trending upward, address the root cause immediately before it crosses an intervention threshold. Learn more about the latest changes in our article on the new CSA scoring system for 2026.

Keep Insurance Current

An insurance lapse — even a brief one — will show up on your FMCSA record and can result in your operating authority being revoked. Work with your insurance provider to ensure filings are submitted to FMCSA well before your current policy expires.

Prepare for Compliance Reviews

If FMCSA selects you for a compliance review (essentially a safety audit), the outcome will be reflected in your DOT record as a safety rating. Preparation is key — keep your driver qualification files current, maintain accurate records of hours of service, vehicle maintenance, and drug testing programs. Use our DOT audit checklist to ensure you are ready.

Frequently Asked Questions

How do I look up a DOT number for free?

You can look up any USDOT number for free using FMCSA's SAFER system at ai.fmcsa.dot.gov. Enter the carrier's USDOT number or company name and you will see their operating status, safety rating, inspection history, and insurance information. No account or login is required for basic lookups.

What information can I find with a DOT number lookup?

A DOT number lookup reveals the carrier's legal name, operating status, safety rating, fleet size, cargo types hauled, insurance coverage, inspection and crash history, and out-of-service rates. You can also see whether the carrier has active operating authority and when they last filed their MCS-150 update.

How do I check if a trucking company is legitimate?

Look up the company's USDOT number on FMCSA's SAFER system. Verify that their operating status shows "AUTHORIZED" and that their MCS-150 form date is recent (within the last two years). Check that they have adequate insurance coverage on file. Review their inspection history for red flags like high out-of-service rates or an Unsatisfactory safety rating.

What is the difference between a DOT number and an MC number?

A USDOT number is a unique identifier assigned to every commercial motor carrier operating in interstate commerce. An MC (Motor Carrier) number was previously required for carriers transporting regulated commodities for hire. As of October 2025, FMCSA eliminated MC numbers and consolidated everything under the USDOT number system. Read more about this change in our article on FMCSA's elimination of MC numbers.

Can I look up a carrier by company name instead of DOT number?

Yes. The FMCSA SAFER system allows you to search by company name, USDOT number, or MC number. Searching by name may return multiple results if several carriers share a similar name, so using the USDOT number is the most direct and reliable method.

How often is FMCSA's carrier data updated?

FMCSA updates its carrier data on a rolling basis. Inspection and crash data is typically added within 90 days of an event. Carrier registration information is updated when carriers file their MCS-150 biennial update or make changes to their operating authority. CSA scores are recalculated and published monthly.

What does it mean if a carrier's DOT number shows "NOT AUTHORIZED"?

A "NOT AUTHORIZED" status means the carrier does not currently have active authority to operate in interstate commerce. This could result from revoked or suspended operating authority, failure to maintain required insurance, an inactive USDOT number, or failure to file the MCS-150 biennial update. You should not hire or contract with a carrier that shows this status until the issue is resolved.