Brokers / California / Thornton / Duff Brothers, Inc.

Duff Brothers, Inc.

Freight broker · Thornton, CA

MC 273940USDOT 2216598Authority active

32yrsAuthority age

93/100Trust score

BMC-84Bond / trust fund

0Revocations (5 yrs)

0Bond gaps (3 yrs)

93of 100

Authority age

30/30

Bond on file

25/25

Revocation history

18/20

Filing stability

15/15

Profile completeness

5/10

Calculated only from FMCSA public records. Paid plans never change a score. How scores work

Broker authorityActive

First grantedJun 1, 1994

MC / docket numberMC273940

USDOT number2216598

Bond / trust fundBMC-84 since Sep 22, 2023

Surety / trusteeNationwide Mutual Insurance Comp

LocationThornton, CA

Phone (FMCSA)—

Checked against FMCSA legacy L&I and Motus records on Oct 21, 2026. Record source: FMCSA L&I. Always confirm on FMCSA SAFER before tendering.

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