{
 "metric": "dnssec",
 "segment": "lu",
 "anchor": "domain",
 "label": "Luxembourg (domains)",
 "population": "domains in Luxembourg",
 "states": [
  "signed",
  "broken_chain",
  "unsigned"
 ],
 "quiet_failure_states": [
  "broken_chain",
  "unsigned"
 ],
 "measurement": "**local probe** (deliberately, ADR-0009): DNSKEY at the child, then DS at the **parent**. Denominator: `any`.",
 "why_it_matters": "`broken_chain` is the quiet failure and the reason this metric exists — DNSKEY published but no DS at the parent means the zone is signed and *unverifiable*. The operator has done the work, the dashboard says DNSSEC is on, and no resolver on earth validates it. Unsigned is merely the default.",
 "limits": "Must be measured locally. The DomainAPI health endpoint exposes no DNSSEC state and resolves DS at the child, which cannot distinguish `broken_chain` from `signed`.",
 "data_tier": "dns",
 "population_predicate": "any",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-11",
  "n": 207,
  "qf_pct": 91.3,
  "ci": [
   86.67,
   94.43
  ],
  "dist": {
   "signed": 8.7,
   "broken_chain": 4.35,
   "unsigned": 86.96
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 101,
   "qf_pct": 92.08,
   "ci": [
    85.14,
    95.93
   ],
   "dist": {
    "signed": 7.92,
    "broken_chain": 0.99,
    "unsigned": 91.09
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 101,
   "qf_pct": 92.08,
   "ci": [
    85.14,
    95.93
   ],
   "dist": {
    "signed": 7.92,
    "broken_chain": 0.99,
    "unsigned": 91.09
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 275,
   "qf_pct": 89.82,
   "ci": [
    85.68,
    92.86
   ],
   "dist": {
    "signed": 10.18,
    "broken_chain": 1.82,
    "unsigned": 88
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 275,
   "qf_pct": 89.82,
   "ci": [
    85.68,
    92.86
   ],
   "dist": {
    "signed": 10.18,
    "broken_chain": 1.82,
    "unsigned": 88
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-11",
   "n": 207,
   "qf_pct": 91.3,
   "ci": [
    86.67,
    94.43
   ],
   "dist": {
    "signed": 8.7,
    "broken_chain": 4.35,
    "unsigned": 86.96
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/dnssec/lu"
}