Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
I
This page provides the message formats and technical specifications necessary to electronically transmit data to CBP's automated systems.
AESTIR Appendix F - License and License Exemption Type Codes
Share This Page.
