Carrier profile · USDOT 2547800 · Updated Jun 13, 2026
SIGN SERVICE LLC
2 power unitsDUBUQUE, IA50/100
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.
Shares a registration email domain with other carriers
@rainbolubes.com — 4 carriers: USDOT 1719USDOT 585869USDOT 3468120
Shares a company officer with other carriers
sue kramer — 2 carriers: USDOT 928695
Owner / group view· confidence: email domain + officer
Owner / group view
Affiliated authorities
Collapses 5 related authorities · joined by email domain + officer
- Authorities
- 5
- Combined power
- 17
- States
- 3
- Oldest authority
- Jun 1, 1974
- Active now
- 2
- SIGN SERVICE LLC· viewingUSDOT 25478002PU
- 9PU
- INDUSTRIAL FLUID SOLUTIONS ENTERPRISESUSDOT 34681203PU
- JET BULK OIL COUSDOT 5858692PU
- RAINBO CO LLCUSDOT 9286951PU
Affiliated entities· hover to preview