X664 U.S. POST OFFICE

Facility details

FIRMS code

X664

Name

U.S. POST OFFICE

Address

1257 MAIL TRAIL

FAIRBANKS, AK 99706

Status

Active (A)

Facility type

CBP administrative site (08)

CBP port

Fairbanks, AK (3111)

CBP region

7

Last changed

2026-10-23

Data as of

2026-10-23

Pre-filing validation

Validate X664 before you file

Check X664 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":"X664","port":"3111","use":"location_of_goods"}'