{
 "metric": "mx-dane",
 "segment": "global",
 "anchor": "domain",
 "label": "global domains",
 "population": "domains worldwide",
 "states": [
  "present",
  "absent"
 ],
 "quiet_failure_states": [
  "absent"
 ],
 "measurement": "Tier 0 (DNS-only, so it works even where port 25 is blocked). TLSA lookup at `_25._tcp.<mx>`. Denominator: `has_mx`.",
 "why_it_matters": "DANE is what turns opportunistic TLS into authenticated TLS — it tells a sender which certificate to expect, closing the downgrade gap that `mx-tls-cert` exposes.",
 "limits": "Near-universally absent outside a few countries; useful as an adoption frontier rather than an actionable defect for a small company.",
 "data_tier": "smtp",
 "population_predicate": "has_mx",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-14",
  "n": 1481,
  "qf_pct": 94.13,
  "ci": [
   92.81,
   95.21
  ],
  "dist": {
   "present": 5.87,
   "absent": 94.13
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 1479,
   "qf_pct": 94.32,
   "ci": [
    93.02,
    95.39
   ],
   "dist": {
    "present": 5.68,
    "absent": 94.32
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-02",
   "n": 1482,
   "qf_pct": 94.33,
   "ci": [
    93.04,
    95.4
   ],
   "dist": {
    "present": 5.67,
    "absent": 94.33
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 1488,
   "qf_pct": 94.09,
   "ci": [
    92.77,
    95.17
   ],
   "dist": {
    "present": 5.91,
    "absent": 94.09
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 1487,
   "qf_pct": 94.15,
   "ci": [
    92.84,
    95.23
   ],
   "dist": {
    "present": 5.85,
    "absent": 94.15
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-07",
   "n": 1482,
   "qf_pct": 94.06,
   "ci": [
    92.74,
    95.16
   ],
   "dist": {
    "present": 5.94,
    "absent": 94.06
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-14",
   "n": 1481,
   "qf_pct": 94.13,
   "ci": [
    92.81,
    95.21
   ],
   "dist": {
    "present": 5.87,
    "absent": 94.13
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/mx-dane/global"
}