Carrier profile · USDOT 3922323 · Updated Jun 13, 2026
Sper Contracting Corporation
DBA RETAINING WALLS COMPANY
2 power unitsSAN DIEGO, CA50/100
AUTHORITY STATUS UNKNOWN
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 company officer with other carriers
thomas klein — 4 carriers: USDOT 1620329USDOT 1838891USDOT 4406893
Owner / group view· confidence: officer
Owner / group view
Affiliated authorities
Collapses 4 related authorities · joined by officer
- Authorities
- 4
- Combined power
- 19
- States
- 3
- Oldest authority
- Mar 19, 2007
- Active now
- 2
- SPER CONTRACTING CORPORATION· viewingUSDOT 39223232PU
- RK2 INCUSDOT 440689312PU
- AMERICAN MOTOR FREIGHT LLCUSDOT 16203293PU
- ILLINOIS RECOVERY SYSTEMS INCUSDOT 18388912PU
Affiliated entities· hover to preview