{
 "metric": "mx-rdns",
 "segment": "gb-no-accounts",
 "anchor": "company",
 "label": "UK newly-formed (no accounts filed) companies",
 "population": "UK newly-formed (no accounts filed) companies",
 "states": [
  "present",
  "absent"
 ],
 "quiet_failure_states": [
  "absent"
 ],
 "measurement": "Tier 0. Resolve the MX, then PTR on the reversed address (bounded DNS query). Denominator: `has_mx`.",
 "why_it_matters": "Missing reverse DNS is a classic quiet failure — nothing breaks visibly, but receiving mail systems downgrade or reject on it, so outbound deliverability degrades in ways that surface as \"our email sometimes doesn't arrive\".",
 "limits": null,
 "data_tier": "smtp",
 "population_predicate": "has_mx",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-14",
  "n": 112,
  "qf_pct": 7.14,
  "ci": [
   3.66,
   13.46
  ],
  "dist": {
   "present": 92.86,
   "absent": 7.14
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 87,
   "qf_pct": 6.9,
   "ci": [
    3.2,
    14.24
   ],
   "dist": {
    "present": 93.1,
    "absent": 6.9
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-02",
   "n": 87,
   "qf_pct": 6.9,
   "ci": [
    3.2,
    14.24
   ],
   "dist": {
    "present": 93.1,
    "absent": 6.9
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-04",
   "n": 111,
   "qf_pct": 7.21,
   "ci": [
    3.7,
    13.58
   ],
   "dist": {
    "present": 92.79,
    "absent": 7.21
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 112,
   "qf_pct": 7.14,
   "ci": [
    3.66,
    13.46
   ],
   "dist": {
    "present": 92.86,
    "absent": 7.14
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-07",
   "n": 111,
   "qf_pct": 7.21,
   "ci": [
    3.7,
    13.58
   ],
   "dist": {
    "present": 92.79,
    "absent": 7.21
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-14",
   "n": 112,
   "qf_pct": 7.14,
   "ci": [
    3.66,
    13.46
   ],
   "dist": {
    "present": 92.86,
    "absent": 7.14
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/mx-rdns/gb-no-accounts"
}