Sep 6 – 7, 2023 Workshop
Meliá Danang Beach Resort
Asia/Ho_Chi_Minh timezone

Implementing EDNS Client Subnet in a privacy preserving way

Sep 7, 2023, 10:30 AM
Meliá Danang Beach Resort

Meliá Danang Beach Resort

19 Trường Sa, Hoà Hải, Ngũ Hành Sơn, Đà Nẵng 550000, Vietnam
In-Person Standard Presentation OARC 41 Day 2


Andrey Meshkov


If you're operating a recursive DNS resolver, you're likely interested in implementing the EDNS Client Subnet, as it's a vital component many top-tier CDN providers use for geo-balancing.

However, simply forwarding the user's subnet to name servers carries serious privacy implications. I'll share how AdGuard DNS navigates this challenge, ensuring we protect user privacy, deliver the best possible responses, and keep the cache size within reasonable limits.

Primary author

Andrey Meshkov

Presentation materials