Having similar issues with Quad9. I even had an odd issue today where I could ping 9.9.9.9 just fine, but dig @9.9.9.9 would time out. That suggested to me that it’s an issue with their DNS server specifically, and not the network. I didn’t get around to trying from another host, but I think it’s less likely to have to do with Comcast specifically as you simply connecting to a different anycast server.
The issues are only intermittent for me, they’ll come and go. Right now I can resolve against 9.9.9.9 just fine, but who knows how long that’ll last until issues crop up again. I had to switch DoH providers temporarily, hopefully everything will be resolved soon.
Having similar issues with Quad9. I even had an odd issue today where I could
ping 9.9.9.9just fine, butdig @9.9.9.9would time out. That suggested to me that it’s an issue with their DNS server specifically, and not the network. I didn’t get around to trying from another host, but I think it’s less likely to have to do with Comcast specifically as you simply connecting to a different anycast server.The issues are only intermittent for me, they’ll come and go. Right now I can resolve against 9.9.9.9 just fine, but who knows how long that’ll last until issues crop up again. I had to switch DoH providers temporarily, hopefully everything will be resolved soon.
Edit: Quad9 has posted an update