I just finished setting up a custom router with dns ad blocking. Next comes a media player so I can purge this smart TV filth from my household.
Huge shout out to Louis Rossmann and the FUTO communuty contributors, check out the wiki on self-hosted software if you haven’t already.
Check for HTTPS traffic as well as the regular let 53. They could be doing DNS over HTTPS to get around the block, or a static IP for a nameserver.