{
  "id": "dns-resolvers/quad9",
  "url": "https://www.proxies.sx/dns-resolvers/quad9",
  "license": "CC BY 4.0",
  "reviewed": "2026-09-24",
  "sourcesCheckedAt": "2026-09-24T19:10:05.885Z",
  "measuredAt": "2026-09-24T19:36:07.535Z",
  "name": "Quad9",
  "operator": "Quad9",
  "homepage": "https://quad9.net/",
  "summary": {
    "variants": 3,
    "ipv4": 6,
    "ipv6": 6,
    "plainDnsAnswered": "6/6",
    "dnssec": "yes",
    "ecsPrefixes": [
      0,
      24
    ],
    "nxdomainHonest": "yes",
    "doh": {
      "documented": 3,
      "answered": 3
    },
    "dot": {
      "documented": 3,
      "answered": 3
    },
    "filtered": true,
    "serviceAsns": [
      {
        "asn": 19281,
        "holder": "QUAD9-AS-1 - Quad9"
      }
    ],
    "egressAsns": []
  },
  "variants": [
    {
      "key": "recommended",
      "name": "Quad9 (recommended)",
      "filtering": "Malware blocking",
      "ipv4": [
        {
          "ip": "9.9.9.9",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 0,
          "prefix": "9.9.9.0/24",
          "asns": [
            19281
          ]
        },
        {
          "ip": "149.112.112.112",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 0,
          "prefix": "149.112.112.0/24",
          "asns": [
            19281
          ]
        }
      ],
      "ipv6": [
        "2620:fe::fe",
        "2620:fe::9"
      ],
      "doh": [
        {
          "url": "https://dns.quad9.net/dns-query",
          "answered": true
        }
      ],
      "dot": [
        {
          "host": "dns.quad9.net",
          "answered": true
        }
      ]
    },
    {
      "key": "ecs",
      "name": "Quad9 secured with ECS",
      "filtering": "Malware blocking",
      "ipv4": [
        {
          "ip": "9.9.9.11",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 24,
          "prefix": "9.9.9.0/24",
          "asns": [
            19281
          ]
        },
        {
          "ip": "149.112.112.11",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 24,
          "prefix": "149.112.112.0/24",
          "asns": [
            19281
          ]
        }
      ],
      "ipv6": [
        "2620:fe::11",
        "2620:fe::fe:11"
      ],
      "doh": [
        {
          "url": "https://dns11.quad9.net/dns-query",
          "answered": true
        }
      ],
      "dot": [
        {
          "host": "dns11.quad9.net",
          "answered": true
        }
      ]
    },
    {
      "key": "unsecured",
      "name": "Quad9 unsecured",
      "filtering": "None",
      "ipv4": [
        {
          "ip": "9.9.9.10",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 0,
          "prefix": "9.9.9.0/24",
          "asns": [
            19281
          ]
        },
        {
          "ip": "149.112.112.10",
          "answered": true,
          "dnssecValidates": true,
          "nxdomainHonest": true,
          "ecsPrefix": 0,
          "prefix": "149.112.112.0/24",
          "asns": [
            19281
          ]
        }
      ],
      "ipv6": [
        "2620:fe::10",
        "2620:fe::fe:10"
      ],
      "doh": [
        {
          "url": "https://dns10.quad9.net/dns-query",
          "answered": true
        }
      ],
      "dot": [
        {
          "host": "dns10.quad9.net",
          "answered": true
        }
      ]
    }
  ],
  "statements": [
    {
      "quote": "Quad9 c/o SWITCH Werdstrasse 2 8004 Zürich Switzerland",
      "url": "https://quad9.net/about/"
    },
    {
      "quote": "DNSSEC validation is enabled on all resolver addresses.",
      "url": "https://quad9.net/service/service-addresses-and-features/"
    },
    {
      "quote": "Quad9 does not collect or record user IP addresses, nor does it collect or hold any proxy for or representation of user IP addresses",
      "url": "https://quad9.net/privacy/policy/"
    }
  ],
  "sources": [
    "https://quad9.net/service/service-addresses-and-features/"
  ]
}