[BrandoElFollito]

Question after reading (very interesting) answers: what is the downsize using the root servers instead of the well-known ones? (1.1.1.1, 8.8.8.8, ...)

Is it the cache that improves resolution speed in a meaningful way?

[cyounkins]

They are used in different ways - search for recursive resolver vs caching public resolver.

Running your own recursive resolver will almost certainly be slower, on the order of 2x latency. I should test it...

Also, DNS-over-HTTP and DNS-over-TLS are not available with all DNS servers, but can be readily enabled to secure the last mile when the upstream public resolver supports it.