Is it safe to give out my DNS?

So I was told about how to improve my internet speed, but the guys wants my DNS from my iPhone or something. Is it safe to give it out?

Yeah, that's fine. The DNS you use can in no way be used to identify you.

Based on your mention of the iPhone, if you use Wi-Fi, you will normally use a different DNS server from when you are using cellular (mobile) Internet.

If you use the automatic set up of your IP, gateway and DNS addresses, then the DNS server for Wi-Fi, will probably just be the internal address of your router, and be something like 192.168.1.1. This is meaningless to others apart from telling them you are using a home router. For you are using a cellular connection, it may identify which cellular network you are using.

Apart from the cases above, there's no information that the DNS address will reveal.

Its fine. Your dns doesn't point back to you. In fact i use 8.8.8.8 and 8.8.4.4 but that doesn't tell you anything

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