Mammoth Underground LLC (USDOT 1188979)
No blockers or cautions found.
- DOT number
- USDOT 1188979
- Operating authority
- No active operating authority on file with FMCSA. The federal bulk file showed this carrier active as of 2026-08-29. We could not confirm that live just now.
- Insurance on file
- No active liability (BIPD) insurance on file with FMCSA.
- Safety rating
- No published safety rating
- Fleet on file
- 5 power units, 3 drivers
- Operation type
- Interstate
- Physical address
- 421 W BONANZA RD, LAS VEGAS, NV 89106-3226
- MCS-150 last filed
- 2025-08
Frequently asked questions
What carrier is DOT 1188979?
DOT 1188979 (USDOT 1188979) is Mammoth Underground LLC, an interstate motor carrier.
What is Mammoth Underground LLC's USDOT number?
Mammoth Underground LLC's USDOT number is 1188979. No MC docket number is on file.
Is Mammoth Underground LLC currently authorized to operate?
No active operating authority on file with FMCSA. The federal bulk file showed this carrier active as of 2026-08-29. We could not confirm that live just now. Source: FMCSA registration and licensing records.
Does Mammoth Underground LLC have insurance on file with FMCSA?
No active liability (BIPD) insurance on file with FMCSA.
What is Mammoth Underground LLC's safety record?
In the last 24 months, FMCSA records show 0 of 3 vehicle inspections ending out-of-service for Mammoth Underground LLC, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.
What is Mammoth Underground LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. Mammoth Underground LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Mammoth Underground LLC's FMCSA safety rating?
Mammoth Underground 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.
Changes over time
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Carriers based in Las Vegas, NV
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Reconstructed from cached and fleetfax-ingested FMCSA public records (live FMCSA was unavailable) and may be out of date; verify current status on FMCSA SAFER. fleetfax surfaces the facts; brokers make the judgment. FMCSA status