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If you need to reactivate your USDOT number because you failed to complete the biennial update or if you received a letter stating you were due to complete a biennial update, please go directly to the link below to complete these processes.

If you have your PIN:

• FMCSA Online Registration Portal

If you don't have or don't remember your PIN:

• Request a PIN Number

If you don’t have a USDOT PIN number and your mailing address in MCMIS is outdated, you can’t submit a request for a PIN number to be mailed to you. You can:

• Update via Fax or US Mail