DNS Question

So, i normally use 1.1.1.1 etc for my DNS servers rather than the ISP supplied ones, and for some reason, if i change them, i still seem to be routed through the ISP servers as well as the CF ones.

If i leave them set to ISP supplied DNS servers, i only get theirs listed using the below test website.

https://www.top10vpn.com/tools/what-is-my-dns-server/

Surely i should only see the Cloudfare servers if i change them and not the ISP ones as well?

Or am i not understanding how they work?

I take it you are setting the cloudfare DNS manually on a PC or similar. But your router may be picking up DNS from your ISP and setting it via DHCP or you may have the DNS set in your router.

I have my DNS set to my router and set the DNS I want in the router.

In reply to a post by DFScale:

I take it you are setting the cloudfare DNS manually on a PC or similar. But your router may be picking up DNS from your ISP and setting it via DHCP or you may have the DNS set in your router.

I have my DNS set to my router and set the DNS I want in the router.

Yes, i do the same.

All clients point to the router for the DNS, and the router i am manually setting but on testing, it still lists the ISP as the connected server, along with Cloudfare as well.

It appears to list the ISP and then Cloudfare, which seems to be adding a layer.

Ill try and get a screenshot!

Ok, so this is what i get with Cloudfare set in router as DNS primary and secondary.

https://thumbsnap.com/u14f1UGw

In reply to a post by Alucidnation:

Or am i not understanding how they work?

I use quad 9 for DNS and that test reports I'm using WoodyNet (which appears to be one of the partners. I don't see my ISP (virgin media) on the list. I use my own router in place of the ISP supplied one, and have quad9 set on the router.

You may want to investigate if you can use secure DNS (DNS-over-TLS or DNS-over-HTTPS), or if your web browser is overriding what is set in the operating system.

Or your router and/or ISP are hijacking DNS. Quite possible.

In reply to a post by Alucidnation:

Ok, so this is what i get with Cloudfare set in router as DNS primary and secondary.

Paste the output of ipconfig /all

I don't think that test is at all accurate.

I use NextDNS and all other DNS traffic is blocked and re-directed to NextDNS on my router.
Every other test shows this as working as designed, except this one.

Try this one https://www.dnsleaktest.com/

In reply to a post by smouty:

I don't think that test is at all accurate.

I use NextDNS and all other DNS traffic is blocked and re-directed to NextDNS on my router.
Every other test shows this as working as designed, except this one.

Try this one https://www.dnsleaktest.com/

Interesting.

I just tried that test a couple of times and its only picking up the ISP DNS and not Cloudfare that is manually set on the router.

BTW, router is a Netgear RS300.

Test result
https://thumbsnap.com/27aie9ZR

Router
https://thumbsnap.com/3ek1NXtP


Weird.

In reply to a post by Oliver341:

Paste the output of ipconfig /all

Unless you have a Mac, or Linux machine.

In reply to a post by smouty:

Try this one https://www.dnsleaktest.com/

Gives me exactly the same results, using my Asus router, and Quad9 DNS.

For the avoidance of doubt, you guys are actually discussing cloudf*L*are here, right?