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FIRMS code

A173 U S CUSTOMS OFFICE

Active CBP administrative site

Facility details

FIRMS code
A173
Name
U S CUSTOMS OFFICE
Address
42 AIRLINE AVE
PORTSMOUTH, NH 03801-2884
Status
Active (A)
Facility type
CBP administrative site (08)
CBP port
Portsmouth, NH (0131)
CBP region
1
Last changed
2026-10-23
Data as of
2026-10-23

Pre-filing validation

Validate A173 before you file

Check A173 against the port and use on your filing before ACE does: list, status, port (ACE 164) and facility type. 

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"A173","port":"0131","use":"location_of_goods"}'
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Other codes at this address

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

CodeNameTypeStatus
A174 PEASE INTERNATIONAL TRADEPORT Inspection facility Active

Nearby facilities in the same port

CodeNameTypeDistance
C537 NEW HAMPSHIRE AIR NATIONAL GUARD Inspection facility 774 m
C965 EMERY WORLDWIDE Inspection facility 1.2 km
AAL3 ROCHESTER ELECTRONICS Foreign trade zone 1.5 km
A178 SPRAGUE ENERGY - PSNH Pier or terminal 1.8 km
A188 TYCOM US INC. Pier or terminal 2.2 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.