{
 "metric": "cert-expiry",
 "segment": "za",
 "anchor": "domain",
 "label": "South Africa (domains)",
 "population": "domains in South Africa",
 "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": 260,
  "qf_pct": 3.08,
  "ci": [
   1.57,
   5.95
  ],
  "dist": {
   "valid_30d_plus": 96.92,
   "expiring_under_30d": 3.08,
   "expired": 0
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 96,
   "qf_pct": 3.12,
   "ci": [
    1.07,
    8.79
   ],
   "dist": {
    "valid_30d_plus": 96.88,
    "expiring_under_30d": 1.04,
    "expired": 2.08
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 94,
   "qf_pct": 4.26,
   "ci": [
    1.67,
    10.44
   ],
   "dist": {
    "valid_30d_plus": 95.74,
    "expiring_under_30d": 4.26,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 267,
   "qf_pct": 2.62,
   "ci": [
    1.28,
    5.31
   ],
   "dist": {
    "valid_30d_plus": 97.38,
    "expiring_under_30d": 2.62,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-12",
   "n": 260,
   "qf_pct": 3.08,
   "ci": [
    1.57,
    5.95
   ],
   "dist": {
    "valid_30d_plus": 96.92,
    "expiring_under_30d": 3.08,
    "expired": 0
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-expiry/za"
}