X525 U S POST OFFICE

Facility details

FIRMS code

X525

Name

U S POST OFFICE

Address

W 904 RIVERSIDE

SPOKANE, WA 99201

Status

Active (A)

Facility type

Inspection facility (05)

CBP port

Spokane, WA (3022)

CBP region

7

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate X525 before you file

Check X525 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":"X525","port":"3022","use":"location_of_goods"}'