I have been using DoT for over a year or is it two. Hard to remember. Resolver performance seems to be based on distance. For me the anycast system routes to Cloudflare are closest at just about 100 miles while Quad9 is 1000 miles. Cleanbrowsing is over 200 miles. I like to use DNS filtering so use Quad9 most of the time which results in good response. Am waiting for the Cloudflare Secure to work with DoT. Had used it without DoT and it is faster than Quad9.
That's because they're not included in that list.
I use namebench.
Ok
I've found CleanBrowsing to perform fairly fast in my area. In testing on another forum it had some of the better results for filtering malware sites. Though the same person testing found that DNS based filtering for malware and phishing IPs can be pretty hit or miss. It can be additive, but not always comprehensive. If they are the best performer it is definitely worth trying, they have a decent privacy policy as well.
I take it those are the maximum values. Maximum values are unrepresentative of the server because they usually reflect another upstream server that is slow. It's better to look at the averages. In fact it's better to look at the graphs and understand what the "typical" response time is and what the distribution looks like.
With an internet connection that bad I expect you'll see a lot of variation between servers from day to day making it difficult to say definitively that one is better than the other.
But if the best DoT response time is 150 ms your latency looks horrible. Or there's some other factor coming into play. Are you on some sort of rural internet connection?
The encryption involved in DoT adds some overhead. But also a provider's DoT and non-DoT servers may have different priorities, loads, etc. They may even be completely different servers. That's why I said "You can't infer one from the other".
Both. Their DoT servers were about 3 ms slower than the non-DoT version. I remember comparing them a few months ago and the difference was about 40 ms. Like I said, things change all the time.
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