Carrier profile · USDOT 136378 · Updated Jun 13, 2026
Alamo Transformer Supply Co
4 power unitsavg 9 yrLocal · 1 statesSAN ANTONIO, TX50/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORY
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
- 4931 SPACE CENTER DR, SAN ANTONIO, TX, 78218-6908
- Mailing address
- P O BOX 39908, SAN ANTONIO, TX, 78218-6908
- Operation
- Interstate
Contact
- Phone
- (210) 661-8411
- Fax
- (210) 661-9268
- Web domain
- alamotransformer.com
Registration
- Officer
- Cristina Hinojosa
- USDOT / docket
- 136378
- First registered
- Jun 1, 1974
- Last MCS-150
- Jul 16, 2025 · 200,000 mi (2024)
- FMCSA safety rating
- Satisfactory · Feb 22, 1991
- D-U-N-S
- 27006212
Fleet (self-reported · MCS-150)
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.