* the name of the protocol: DoX
* the name of the request: IQ-get
* lastly, the current date
edit: OK, this might not be a joke after all, but it sure has a few hints in there.
DoH is DNS-over-HTTP
DoT is DNS-over-TLS
IQ is the usual abbreviation for info/query elements in XMPP ...
Have you read it completely?
>Version 0.0.1 (2019-03-11)
DoH is DNS-over-HTTP
DoT is DNS-over-TLS