We are starting to experiment with QName Minimization on some of our DNS servers to add an additional layer of privacy for our users.
You can read more about it here:
It should cause no impact to any of our users, but if you have any concern or see any issues, let us know. This change is being pushed live in conjunction with the NXDOMAIN->REFUSED status change for blocked domains:
Switching from NXDOMAIN to REFUSED for blocked domains