{
 "metric": "caa",
 "segment": "gb-micro",
 "anchor": "company",
 "label": "UK micro companies",
 "population": "UK micro companies",
 "states": [
  "present",
  "absent"
 ],
 "quiet_failure_states": [
  "absent"
 ],
 "measurement": "Tier 0. CAA records at the apex. Denominator: `any`.",
 "why_it_matters": "Without CAA, *any* public CA may issue a certificate for the domain, so mis-issuance has no technical backstop. Cheap to publish, almost nobody does.",
 "limits": null,
 "data_tier": "dns",
 "population_predicate": "any",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-11",
  "n": 231,
  "qf_pct": 99.57,
  "ci": [
   97.59,
   99.92
  ],
  "dist": {
   "present": 0.43,
   "absent": 99.57
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 102,
   "qf_pct": 100,
   "ci": [
    96.37,
    100
   ],
   "dist": {
    "present": 0,
    "absent": 100
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-03",
   "n": 102,
   "qf_pct": 100,
   "ci": [
    96.37,
    100
   ],
   "dist": {
    "present": 0,
    "absent": 100
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 231,
   "qf_pct": 99.57,
   "ci": [
    97.59,
    99.92
   ],
   "dist": {
    "present": 0.43,
    "absent": 99.57
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-11",
   "n": 231,
   "qf_pct": 99.57,
   "ci": [
    97.59,
    99.92
   ],
   "dist": {
    "present": 0.43,
    "absent": 99.57
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/caa/gb-micro"
}