Mason Supply Source LLC (USDOT 3765638)
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Registered with FMCSA for in-state operation only, with no federal operating authority. Loads that cross state lines are outside this registration.
- DOT number
- USDOT 3765638
- Operating authority
- Federal operating authority is not applicable: this is an intrastate operation, with no federal docket required.
- Insurance on file
- No active liability (BIPD) insurance on file with FMCSA.
- Safety rating
- No published safety rating
- Fleet on file
- 2 power units, 1 driver
- Operation type
- Intrastate Non-Hazmat
- Physical address
- 163-165 BRIDGE RD STE 100, ISLANDIA, NY 11749
- MCS-150 last filed
- Apr 2026
Other carriers based in Islandia, NY
Companies whose FMCSA physical address is in Islandia, NY. Listed because of where they are based, nothing else.
- BIG BROTHERS BIG SISTERS OF LI DONATION CENTER INC (USDOT 2013676)
- C B IMPORT SPECIALTY INC (USDOT 3297778)
- CHRISTOS KA LTD (USDOT 2082352)
- EVIDENCE SERVICES LLC (USDOT 4519969)
- JOSE A IGLESIAS (USDOT 2561856)
- KELMAR CONSTRUCTION SERVICES (USDOT 2343053)
- RJMS LANDSCAPING INC (USDOT 4442155)
- VINCON ELECTRIC CO INC (USDOT 2403982)
Frequently asked questions
What carrier is DOT 3765638?
DOT 3765638 (USDOT 3765638) is Mason Supply Source LLC, an intrastate non-hazmat motor carrier.
What is Mason Supply Source LLC's USDOT number?
Mason Supply Source LLC's USDOT number is 3765638. No MC docket number is on file.
Is Mason Supply Source LLC currently authorized to operate?
Federal operating authority is not applicable: this is an intrastate operation, with no federal docket required. Source: FMCSA registration and licensing records.
Does Mason Supply Source LLC have insurance on file with FMCSA?
No active liability (BIPD) insurance on file with FMCSA.
What is Mason Supply Source LLC's safety record?
In the last 24 months, FMCSA records show 2 of 6 vehicle inspections ending out-of-service for Mason Supply Source LLC, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.
What is Mason Supply Source LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. Mason Supply Source LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Mason Supply Source LLC's FMCSA safety rating?
Mason Supply Source LLC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.
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Carriers based in Islandia, NY
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Reconstructed from cached and fleetfax-ingested FMCSA public records, so it may be out of date. Records loaded Sep 25, 2026. Verify current status on FMCSA SAFER. fleetfax surfaces the facts; brokers make the judgment. FMCSA status