31 CFR § 510.516 - Transactions related to telecommunications and mail.
(2) This section does not authorize:
(i) The provision, sale, or lease of telecommunications equipment or technology; or
(ii) The provision, sale, or lease of capacity on telecommunications transmission facilities (such as satellite or terrestrial network connectivity).
(b) All transactions of common carriers incident to the receipt or transmission of mail and packages between the United States and North Korea are authorized provided that the importation or exportation of such mail and packages is exempt from or authorized pursuant to this part.