October 31, 2019 to November 1, 2019 AGM
JW Marriott Austin
America/Winnipeg timezone
OARC31 Presentation Videos available at https://youtube.com/DNS-OARC

Is ECS Evil?

Nov 1, 2019, 9:00 AM
Griffin Hall (JW Marriott Austin)

Griffin Hall

JW Marriott Austin

110 E 2nd St Austin TX 78701 USA
No longer available: Standard Presentation Public Workshop


Mr Tom Arnfeld (DNS Team, Cloudflare)Mr Gudmundsson Olafur (Cloudflare)


EDNS Client Subnet when finally published in 2016 (rfc7871), attempted to solve a need for some content delivery networks to know where queries originated. When published, the RFC clearly outlines privacy concerns, but how does that look in practice?

More than 20+ million Internet properties use Cloudflare's network and approximately 18% of the top 10k websites on the internet use at least one Cloudflare product. In terms of DNS queries, we consistently do approximately 2 million DNS queries per second. That's around 170 billion queries per day, and 5 trillion queries a month. In this talk, we’ll dive into the ECS landscape from Cloudflare’s perspective… where is ECS data coming from, who is sending it, and what does it contain?

Talk Duration Lightning Talk 10 Minutes

Primary authors

Mr Tom Arnfeld (DNS Team, Cloudflare) Mr Gudmundsson Olafur (Cloudflare) Mr Marek Vavrusa (DNS Team, Cloudflare)

Presentation materials