FIRMS code

U746 DIAMOND SHAMROCK REFINING POD 1 & 2

Deleted Foreign trade zone

This code is deleted in CBP's FIRMS list. Don't use it on new filings. FIRMSapi keeps deleted codes so lookups of old paperwork still resolve; check the port listing for a replacement.

Facility details

FIRMS code: U746
Name: DIAMOND SHAMROCK REFINING POD 1 & 2
Address: NAVIGATION BLVD.
CORPUS CHRISTI, TX 78401
Status: Deleted (D)
Facility type: Foreign trade zone (02)
CBP port: Corpus Christi, TX (5312)
CBP region: 6
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate U746 before you file

Validation fails U746: it's deleted, the reject ACE returns as 159. Search the port for an active replacement.

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"U746","port":"5312","use":"ftz_admission"}'

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Other codes at this address

Many facilities hold several FIRMS codes, for example one per facility type or operator.

Code	Name	Type	Status
T485	TOR MINERALS BMD 1 2	Unspecified type	Deleted
U747	FLINT HILLS PUBLIC OD 1 2	Unspecified type	Deleted

Source: U.S. Customs and Border Protection FIRMS code list, data as of 2026-10-23. FIRMSapi is not affiliated with CBP; confirm bond status and filing details in ACE.