{
 "metric": "cert-expiry",
 "segment": "tw",
 "anchor": "domain",
 "label": "Taiwan (domains)",
 "population": "domains in Taiwan",
 "states": [
  "valid_30d_plus",
  "expiring_under_30d",
  "expired"
 ],
 "quiet_failure_states": [
  "expiring_under_30d",
  "expired"
 ],
 "measurement": "Tier 2, one TLS handshake; read `not_after`. Denominator: `has_web`.",
 "why_it_matters": "The certificate nobody owns. Expiry is a scheduled, entirely predictable outage that still takes sites down constantly, because renewal was somebody's manual task and that somebody left.",
 "limits": null,
 "data_tier": "tls",
 "population_predicate": "has_web",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-12",
  "n": 126,
  "qf_pct": 8.73,
  "ci": [
   4.94,
   14.96
  ],
  "dist": {
   "valid_30d_plus": 91.27,
   "expiring_under_30d": 8.73,
   "expired": 0
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 47,
   "qf_pct": 6.38,
   "ci": [
    2.19,
    17.16
   ],
   "dist": {
    "valid_30d_plus": 93.62,
    "expiring_under_30d": 2.13,
    "expired": 4.26
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 40,
   "qf_pct": 5,
   "ci": [
    1.38,
    16.5
   ],
   "dist": {
    "valid_30d_plus": 95,
    "expiring_under_30d": 5,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 131,
   "qf_pct": 10.69,
   "ci": [
    6.47,
    17.14
   ],
   "dist": {
    "valid_30d_plus": 89.31,
    "expiring_under_30d": 10.69,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-12",
   "n": 126,
   "qf_pct": 8.73,
   "ci": [
    4.94,
    14.96
   ],
   "dist": {
    "valid_30d_plus": 91.27,
    "expiring_under_30d": 8.73,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-expiry/tw"
}