[sagher]

Nonsense.


Nonsense, too.


A DNS server will never increase or decrease your overall Internet speed performance (down- or upstream). If you know what a DNS server does you will know why it will never increase or decrease the performance of your Internet connection.

For those who don't know here is a simple reminder: a DNS server looks up the IP address of a given domain and returns it to the client: google.com -> 123.123.123.123. This is needed because computer systems communicate over the IP protocol. We the humans however don't like to remember long IP addresses (e la IPv6 for example). So we use domains but our computers and servers still need the IP address to communicate. Hence why we use the DNS and DNS servers for domain to IP address resolution.

-> https://www.cloudflare.com/learning/dns/...ns-server/
-> https://en.wikipedia.org/wiki/Domain_Name_System


The correct and fast DNS server can however improve the overall usability and user experience while using the Internet. How/why? Well, a DNS server that is fast resolves domains to IP addresses quickly enough for us not to feel it. So to us it seems like the site is loading really fast because the DNS resolution time is really short. That however will never improve your ISP given Internet connection speed.

So what kind of DNS server would be right for you? A DNS server by a provider that knows their business and has servers all around the world offering anycast DNS servers. This means it will automatically use a DNS server to answer your DNS queries that is as close to you as possible to reduce DNS resolution timings. Such providers are CloudFlare and Google. Those are atleast the two biggest. There might be others.

You can use https://www.grc.com/dns/benchmark.htm to benchmark DNS servers over your Internet connection and see which on is the fastests for you.

Here is a global DNS server benchmark ranking: https://www.dnsperf.com/

I am agreed with you but my point of view is that good DNS server is a pioneer for smooth browsing.