Carrier profile · USDOT 3615103 · Updated Jun 13, 2026
Zum Sf Inc
0 power unitsREDWOOD CITY, CA50/100
AUTHORITY STATUS UNKNOWN
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 275 SHORELINE DR STE 200, REDWOOD CITY, CA, 94065-1452
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (650) 799-7675
- serena@ridezum.com
- Web domain
- ridezum.com
Registration
- Officer
- Serena Wang
- USDOT / docket
- 3615103
- First registered
- Apr 19, 2021
- Last MCS-150
- Apr 19, 2021
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
—Power units
—Annual mileage
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.