FIRMS code

WBW4 Custom Specialized Services LLC

Deleted Centralized examination station

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: WBW4
Name: Custom Specialized Services LLC
Address: 2001 MARITIME ST
OAKLAND, CA 94607-1000
Status: Deleted (D)
Facility type: Centralized examination station (09)
CBP port: San Francisco, CA (2809)
CBP region: 7
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate WBW4 before you file

Validation fails WBW4: 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":"WBW4","port":"2809","use":"exam_site"}'

Get a free key Validation guide

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.