503 Corporations LLC (USDOT 4315389)
1 caution found.
- DOT number
- USDOT 4315389
- Docket (MC) number
- MC1691281
- Operating authority
- Contract carrier authority: active. The federal bulk file showed this carrier active as of 2026-08-29. We could not confirm that live just now.
- Authority granted
- 2024-12-30
- Insurance on file
- Liability (BIPD) insurance on file for $750,000.
- Safety rating
- No published safety rating
- Fleet on file
- 1 power units, 1 drivers
- Operation type
- Interstate
- Physical address
- 1031 RIVAS ST UNIT 201, SAN ANTONIO, TX 78207
- MCS-150 last filed
- 2026-04
Findings
- Driver OOS rate above national average (Caution): 27.27% driver OOS over 11 inspections vs. national average 6.31%. Typically reflects HOS or CDL-compliance issues
Connected carriers
Other carriers linked to this one in FMCSA registration and roadside-inspection records:
Frequently asked questions
What carrier is DOT 4315389?
DOT 4315389 (USDOT 4315389) is 503 Corporations LLC, an interstate motor carrier.
What carrier is MC 1691281?
MC 1691281 is the docket number of 503 Corporations LLC, USDOT 4315389.
What is 503 Corporations LLC's MC number?
503 Corporations LLC's docket number is MC 1691281. Its USDOT number is 4315389.
Is 503 Corporations LLC currently authorized to operate?
Contract carrier authority: active. The federal bulk file showed this carrier active as of 2026-08-29. We could not confirm that live just now. Source: FMCSA registration and licensing records.
Does 503 Corporations LLC have insurance on file with FMCSA?
Liability (BIPD) insurance on file for $750,000.
Who provides 503 Corporations LLC's insurance?
503 Corporations LLC's liability insurance is filed with FMCSA by Highlander Specialty Insurance Company.
What is 503 Corporations LLC's safety record?
In the last 24 months, FMCSA records show 3 of 9 vehicle inspections ending out-of-service for 503 Corporations LLC, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.
What is 503 Corporations LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. 503 Corporations LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is 503 Corporations LLC's FMCSA safety rating?
503 Corporations LLC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.
Changes over time
Carriers change. Phone numbers, email addresses, insurance, authority. A sudden contact-info change is often the first sign of carrier identity fraud. fleetfax tracks these changes. Create a free account to follow changes on carriers you save.
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Carriers based in San Antonio, TX
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