Carrier profile · USDOT 3606119 · Updated Jun 13, 2026
STX UNDERGROUND LLC
2 power unitsavg 6.8 yrLocal · 1 statesBROWNSVILLE, TX74/100
AUTHORITY STATUS UNKNOWNHAZMAT
Network & Fraud
Reincarnation chains, shared-VIN links, common domains and officers, and owner-group affiliations — the chameleon / double-broker signals that name-and-USDOT lookups miss.
Last 12 months: 1 truck also ran under 1 other carrier
VINs inspected under this carrier were recently inspected under other USDOTs too — the active double-broker / shared-equipment signal: USDOT 4009737Some overlap is legitimate (leased or sold equipment); review alongside the other signals.
Shares a company officer with other carriers
rolando martinez jr. — 2 carriers: USDOT 3137403
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)22
Observed (24 mo)55
Shared w/ other carriers11
Roadside-observed power units materially exceed the registered MCS-150 fleet — confirm the carrier is operating within its filed capacity.
Shared-VIN cross-links· units inspected under more than one USDOT
| VIN | Carriers | Inspections | First seen | Last seen |
|---|---|---|---|---|
| 5HZBF1626DLKD1265 | 2 | 2 | Oct 13, 2025 | Oct 13, 2025 |
Owner / group view· confidence: officer
Owner / group view
Affiliated authorities
Collapses 2 related authorities · joined by officer
- Authorities
- 2
- Combined power
- 2
- States
- 1
- Oldest authority
- May 16, 2018
- Active now
- 2
- STX UNDERGROUND LLC· viewingUSDOT 36061192PU
- R&H FREIGHT SERVICES LLCUSDOT 31374030PU
Affiliated entities· hover to preview