FIRMS code

M251 CBP, Blount Island

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: M251
Name: CBP, Blount Island
Address: 5160 WILLIAM MILLS ST, Bays 13-16
JACKSONVILLE, FL 32226-3095
Status: Deleted (D)
Facility type: Centralized examination station (09)
CBP port: Jacksonville, FL (1803)
CBP region: 4
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate M251 before you file

Validation fails M251: 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":"M251","port":"1803","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.