Improved EDNS Client Subnet

[ameshkov]

Issue Details

Currently, AdGuard DNS uses a random subnet from the same ASN where the user comes from.

This provides good enough precision for small AS, but large AS (Comcast, China Mobile, etc) need better granularity.

Proposed solution

In order to achieve better quality we should take "country" and "subdivision" into account alongside the ASN itself.

Internal task ID: AGDNS-1622

Alternative solution

No response

[trmdi]

Hello, is there any update on this? This would be a big improvement that benefits many users.

[ameshkov]

It has been done already, we just haven't announced it publicly. I explained the details on the last DNS OARC: https://www.youtube.com/watch?v=YWWJKvtX7vQ

[gpodder770]

It has been done already, we just haven't announced it publicly. I explained the details on the last DNS OARC: https://www.youtube.com/watch?v=YWWJKvtX7vQ

Thanks, came back to try my personal sub again after seeing your comment. After trying for two days, I can say this really improved the speed. The tiktok you mentioned in the video was reported by me and seems to be fixed. I get 15-17 ping now instead of 200+ before the change. Furthermore, it seems facebook and instagram which uses cdn also seems to more faster now and lower ping like tiktok. Really appreciate for the changes.

[ameshkov]

@gpodder770 thanks, I am happy to see that this approach actually works. It's not yet finalized and only enabled for a select few countries, we may need to come up with "subdivision" approach for other countries too (see #729)

[ameshkov]

UPD: Official announcement is ready: https://adguard-dns.io/en/blog/privacy-friendly-edns-client-subnet.html