OFAC FAQ #186 · Iran Sanctions
How do I know that a person has been designated under the GHRAVITY E.O.?
OFAC's answer
Persons designated under the [GHRAVITY E.O.](https://ofac.treasury.gov/media/6491/download?inline) appear on the publicly available Specially Designated Nationals List ([SDN list](https://ofac.treasury.gov/specially-designated-nationals-list-data-formats-data-schemas)) bearing the [HRIT] tag. U.S. persons are obligated to block property involving the persons bearing the tag [HRIT] on the SDN list, unless the transaction is exempt or otherwise authorized by OFAC.