Question Adguard DNS is extremely slow today

Please provide comments and solutions that are helpful to the author of this topic.
It shows NextDNS for me is very slow, while in real-life it is not tha awful1
Screenshot_1-1-2026_111352_dnsspeedtest.online.jpeg
 
My results:

View attachment 294170

Quad9 results aren't consistent and fail sometimes. I added some local websites to the list, to see how fast they will resolve those as those popular domains they already have cached.
I have got faster controld in my test, the remaining are almost the same, and actually controld is marginally faster than NextDNS for me, and both are faster than AG after its late significant slow down.
 
I have got faster controld in my test, the remaining are almost the same, and actually controld is marginally faster than NextDNS for me, and both are faster than AG after its late significant slow down.
AdGuard servers I'm connected to are around 1.100 km away, this is why it's the second slowest for me. If I was connected to Frankfurt, the result would be similar to ControlD, though that's still very bad.

Cloudflare is usually on the first place for me with ping varying from 1-5ms, but now it is on second place because my ISP is connecting me to Vienna currently; to there I usually have ping 5-10ms.

Keep in mind that the result also depends on type of internet connection you have. I have fiber optic connection with ping towards my ISP 1-4ms. Someone using copper wires will have ping to their ISP 20-35ms, which means ping towards DNS servers will be worst or the same in best scenario.
 
Guys, I added Cloudflare for malware (DOH), without adult content.
As you can see, the speed of Cloudflare for malware is different from Cloudflare DNS (1.1.1.1):

2.png

;)

P.S.

Add it like this:

Set up

Code:
https://security.cloudflare-dns.com/dns-query

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Find that the online test is not accurate 100% from my test. I sometimes got significantly different results from the test than actual nextdns and controld. It probably picks locations to check different than what those services actually pick for you.
 
That's completely normal and expected. Whenever you put a DNS request, your DNS server first needs to check if the domain you requested is present in some kind of blocklist you selected. If it isn't, just then it goes to check for corresponding IP address that will return to you.

Same goes for ad blockers; the more lists you subscribe to, the slower will websites load due to ad blocker having to check your domain and rules against every filter list. Unfiltered DNS server don't have to do that and straight go to find the corresponding IP address, which explains why they are faster.

Nonetheless; I prefer blocking on DNS level as filtering is done on the network-level rather than your device doing the checking. Reduces CPU usage and saves battery life.
 
That's completely normal and expected. Whenever you put a DNS request, your DNS server first needs to check if the domain you requested is present in some kind of blocklist you selected. If it isn't, just then it goes to check for corresponding IP address that will return to you.

Same goes for ad blockers; the more lists you subscribe to, the slower will websites load due to ad blocker having to check your domain and rules against every filter list.

Yes, for speed reasons, it seems convenient to have few filter lists.
I currently have only one subscribed.
 
How are you using AdGuard DNS with Windows 11 settings? The AdGuard public DoH DNS and the DoH DNS with an AdGuard account do not provide an IP address, which is necessary for configuring DoH in Windows 11.
I have Adguard DNS Personal Plan.
 

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