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I don't have any data either, but I don't think DNS is perceptible as something that is fast or slow, considering that the vast amount of recursive servers which is what clients connect to, aggressively cache. Add to this that most have a low latency connection to their DNS server whether it be their last mile ISP or an anycast provider which is virtually all public resolvers.

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It does have a great impact.

Nowadays TTL are pretty short because infra is very dynamic, you don't necessarily hit the cache that often. And a random webpage will pull assests from all over the place, with many different domains/subdomains, all requiring DNS resolution.

In the end, even if it's hidden you can definitely feel it in the "snapiness" of loading webpages. Of course when you only load/stream content it has no impact, so it is really dependent on your usage patterns.

Running your own private DNS resolver is also much faster, even with a medium org, you can definitely feel it.

That was initially what I thought as well. Until I tried out Google DNS, and then Cloudflare 1.1.1.1 before settling on NextDNS.

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