{
 "metric": "dnssec",
 "segment": "ch",
 "anchor": "domain",
 "label": "Switzerland (domains)",
 "population": "domains in Switzerland",
 "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": 213,
  "qf_pct": 56.34,
  "ci": [
   49.62,
   62.83
  ],
  "dist": {
   "signed": 43.66,
   "broken_chain": 18.31,
   "unsigned": 38.03
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 109,
   "qf_pct": 44.04,
   "ci": [
    35.08,
    53.4
   ],
   "dist": {
    "signed": 55.96,
    "broken_chain": 0,
    "unsigned": 44.04
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 109,
   "qf_pct": 44.04,
   "ci": [
    35.08,
    53.4
   ],
   "dist": {
    "signed": 55.96,
    "broken_chain": 0,
    "unsigned": 44.04
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 295,
   "qf_pct": 39.32,
   "ci": [
    33.92,
    45
   ],
   "dist": {
    "signed": 60.68,
    "broken_chain": 0.68,
    "unsigned": 38.64
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 295,
   "qf_pct": 39.32,
   "ci": [
    33.92,
    45
   ],
   "dist": {
    "signed": 60.68,
    "broken_chain": 0.68,
    "unsigned": 38.64
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-11",
   "n": 213,
   "qf_pct": 56.34,
   "ci": [
    49.62,
    62.83
   ],
   "dist": {
    "signed": 43.66,
    "broken_chain": 18.31,
    "unsigned": 38.03
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/dnssec/ch"
}