FIRMS code

M343 SEA LAND (CXS)

Deleted Importer's premises

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 active codes at the same address below for a replacement.

Facility details

FIRMS code: M343
Name: SEA LAND (CXS)
Address: PUERTO NUEVO PORT AREA
SAN JUAN, PR 00934
Status: Deleted (D)
Facility type: Importer's premises (06)
CBP port: San Juan, PR (4909)
CBP region: 4
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate M343 before you file

Validation fails M343: 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":"M343","port":"4909","use":"location_of_goods"}'

Get a free key Validation guide

Other codes at this address

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

Code	Name	Type	Status
M339	SHED A	Pier or terminal	Active
M340	SHED B	Pier or terminal	Active
M341	SHED D	Pier or terminal	Active
M356	OPEN SPACE L-N	Pier or terminal	Active

Nearby facilities in the same port

Code	Name	Type	Distance
L1O9	Centro Automotriz Santa Rosa, Inc. 002	Foreign trade zone	760 m
O875	ISS Marine Services, Inc.	Importer's premises	808 m
LBL7	Aceros de AmÃ©rica, Inc. 01	Foreign trade zone	1.1 km
M200	Martinez Arias Hermanos, Inc.	Foreign trade zone	1.1 km
M344	MAERSK,INC-SEA LAND	Importer's premises	1.1 km

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.