Quad9: Difference between revisions
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Revision as of 11:40, 7 August 2020
Quad9 is a nonprofit organization supported by IBM, Packet Clearing House (PCH), Global Cyber Alliance (GCA), and many other cybersecurity organizations for the purpose of operating a privacy-and-security-centric public DNS resolver.[1][2] Its main differentiator from other open DNS resolvers is that it automatically blocks domains known to be associated with malicious activity,[3][4] and does not log the IP address of its users that sent queries to it.[5][6]
Service
IP addresses
Quad9 operates recursive name servers for public use at the following IP addresses. These addresses are mapped to the nearest operational server by anycast routing. Quad9 offers DNS over TLS over port 853,[7] DNS over HTTPS over port 443,[8] and DNSCrypt over port 443.[9]
| Secure | |
|---|---|
| DoH address[10] | https://dns.quad9.net/dns-query |
| IPv4 addresses[10] | 9.9.9.9 149.112.112.112 |
| IPv6 addresses[10] | 2620:fe::fe 2620:fe::fe:9 |
Quad9 DNS service is accessible via the IP addresses for IPv4: 9.9.9.9 and 149.112.112.112, and IPv6: 2620:fe::fe and 2620:fe::fe:9.[10] This service supports blocklist, DNS encryption, and DNSSEC.
An unsecured service that supports limited security features is accessible on IPv4: 9.9.9.10 and 149.112.112.10, and IPv6: 2620:fe::10 and 2620:fe::fe:10.[10] This service only supports DNS encryption.
A secured service supporting ECS is accessible on IPv4: 9.9.9.11 and 149.112.112.11, and IPv6: 2620:fe::11 and 2620:fe::fe:11.[10] This service supports blocklist, DNS encryption, DNSSEC, and ECS.
See also
References
- ^ "About Quad9 DNS". Quad9. Retrieved 2018-04-08.
- ^ "Quad9". Global Cyber Alliance. Retrieved 2018-04-08.
- ^ "Quad9 FAQ: How does Quad9 protect me from malicious domains?". Quad9. Retrieved 2018-04-08.
- ^ "New "Quad9" DNS service blocks malicious domains for everyone". Ars Technica. Retrieved 2018-04-08.
- ^ "Quad9 Privacy Policy". Quad9. Retrieved 2018-04-08.
- ^ "A Deeper Dive Into Public DNS Resolver Quad9". Internet Society. Retrieved 2018-04-08.
- ^ "Quad9 FAQ: Does Quad9 support DNS over TLS?". Quad9. Retrieved 2018-04-08.
- ^ "Quad9 FAQ: Does Quad9 support DNS over HTTPS (DoH)?". Quad9. Retrieved 2018-10-05.
- ^ "DNSCrypt Now in Testing". Quad9. Retrieved 2018-10-22.
- ^ a b c d e f "DoH with Quad9 DNS Servers". Quad9. Retrieved 2018-10-05.
External Links
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