{
  "slug": "opendns",
  "category": "dns-resolvers",
  "name": "OpenDNS",
  "description": "Public DNS resolver from Cisco at 208.67.222.222 and 208.67.220.220, with optional content filtering and a free home account for managing filters.",
  "website": "https://www.opendns.com",
  "license": null,
  "platforms": [],
  "jurisdiction": {
    "code": "US",
    "name": "United States",
    "eyes": "Five Eyes",
    "eu": false,
    "gdpr": false,
    "cloud_act": "provider"
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "F",
  "score": 37,
  "coverage": 100,
  "summary": "OpenDNS scores 37 out of 100 (grade F) on the DNS resolvers criteria. It meets 4 of 11 criteria: no ads or data sales, transparency report, tells users about requests and DNSSEC validation. It partly meets TLS configuration and Encrypted DNS. It does not meet open source, no trackers or telemetry, independent audit, security headers and no query logs. It is based in the United States: Five Eyes member; subject to the US CLOUD Act. Automated tests: SSL Labs grade A- and Mozilla HTTP Observatory grade D-.",
  "url": "https://privacyratings.com/dns-resolvers/opendns/",
  "markdown": "https://privacyratings.com/dns-resolvers/opendns/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "no",
      "evidence": null,
      "note": "Closed source."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "no",
      "evidence": "https://www.opendns.com/privacy-policy/",
      "note": "The Cisco privacy statement used by the site allows third-party advertising and analytics cookies."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.opendns.com/privacy-policy/",
      "note": "The free service is backed by Cisco's paid security products. Cisco states it does not sell personal data."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit is published."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.cisco.com/c/en/us/about/trust-center/transparency.html",
      "note": "Cisco publishes counts of law enforcement and national security requests twice a year."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://www.cisco.com/c/dam/en_us/about/doing_business/trust-center/docs/cisco-principled-approach-to-government-requests-for-data.pdf",
      "note": "Cisco states it notifies customers before producing data to a government unless the law prohibits it."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://www.ssllabs.com/ssltest/analyze.html?d=www.opendns.com&hideResults=on",
      "note": "Grade A-"
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "no",
      "evidence": "https://developer.mozilla.org/en-US/observatory/analyze?host=www.opendns.com",
      "note": "Grade D- (25/100+)"
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "pending",
      "evidence": null,
      "note": "Not tested yet."
    },
    "encrypted_dns": {
      "title": "Encrypted DNS",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://doh.opendns.com/dns-query?dns=AAABAAABAAAAAAAAB2V4YW1wbGUDY29tAAABAAE",
      "note": "DNS over HTTPS answers at doh.opendns.com. No current documentation for DNS over TLS is published."
    },
    "no_query_logs": {
      "title": "No query logs",
      "weight": 3,
      "answer": "no",
      "evidence": "https://www.opendns.com/privacy-policy/",
      "note": "No policy states that queries are kept without IP addresses. The Cisco privacy statement allows retention as long as business needs require."
    },
    "dnssec_validation": {
      "title": "DNSSEC validation",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://doh.opendns.com/dns-query?dns=AAABAAABAAAAAAAACGRuc3NlYy1mYWlsZWQDb3JnAAABAAE",
      "note": "A test query for the deliberately broken dnssec-failed.org returns SERVFAIL, showing validation."
    }
  },
  "tests": {
    "ssllabs": "A-",
    "observatory": "D-",
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T06:38:30.965Z"
  },
  "last_modified": "2026-10-01T06:56:31Z"
}