{
 "metric": "cert-expiry",
 "segment": "gb-small",
 "anchor": "company",
 "label": "UK small companies",
 "population": "UK small companies",
 "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": 721,
  "qf_pct": 7.07,
  "ci": [
   5.42,
   9.18
  ],
  "dist": {
   "valid_30d_plus": 92.93,
   "expiring_under_30d": 7.07,
   "expired": 0
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 349,
   "qf_pct": 4.87,
   "ci": [
    3.06,
    7.66
   ],
   "dist": {
    "valid_30d_plus": 95.13,
    "expiring_under_30d": 2.58,
    "expired": 2.29
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 721,
   "qf_pct": 6.93,
   "ci": [
    5.3,
    9.03
   ],
   "dist": {
    "valid_30d_plus": 93.07,
    "expiring_under_30d": 6.93,
    "expired": 0
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-12",
   "n": 721,
   "qf_pct": 7.07,
   "ci": [
    5.42,
    9.18
   ],
   "dist": {
    "valid_30d_plus": 92.93,
    "expiring_under_30d": 7.07,
    "expired": 0
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-expiry/gb-small"
}