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http://dns-sd.org

DNS Service Discovery (DNS-SD) DNS Service Discovery (DNS-SD) DNS Service Discovery is a way of using standard DNS programming interfaces, servers, and packet formats to browse the network for services. If you think the picture below looks a lot like the old Macintosh AppleTalk “…

https://en.wikipedia.org/wiki/Quad9

Public recursive DNS resolver based in Switzerland Quad9 is a global public recursive DNS resolver that aims to protect users from malware and phishing . Quad9 is operated by the Quad9 Foundation, a Swiss public-benefit, not-for-profit foundation with the purpose of improving the…