Tb-rg Adguard.net ((link)) Here

They explicitly do collect:

At first glance, it looks like a standard Adguard domain, yet the prefix tb-rg often raises eyebrows. Is it malware? Is it a tracking cookie? Or is it a legitimate part of the Adguard infrastructure? tb-rg adguard.net

Go to https://tb.rg-adguard.net/public.php. They explicitly do collect: At first glance, it

For the network administrator: Add it to your allowlist to prevent unnecessary helpdesk tickets about "broken internet." Or is it a legitimate part of the Adguard infrastructure

If you have been digging through the query logs of your AdGuard Home dashboard, sifting through the DNS lists of a Pi-hole, or analyzing the traffic of a corporate firewall, you might have stumbled upon a peculiar string of text: .

If you're using this to create a clean installation, would you like guidance on: with Rufus? Converting ESD to ISO files? Finding digital licenses (HWID)? Let me know which step you're stuck on! KB4052623 (Version 4.18.2102.4) -Error 0x80070643

For 99% of home users, do not block tb-rg.adguard.net . It is a benign operational domain. Blocking it will likely cause error messages on your devices without improving your security.