{
 "metric": "rpki-roa-coverage",
 "segment": "jp",
 "anchor": "asn",
 "label": "Japan (networks)",
 "population": "networks in Japan",
 "states": [
  "covered",
  "uncovered"
 ],
 "quiet_failure_states": [
  "uncovered"
 ],
 "measurement": "**bulk feeds only — no network is probed.** RIPE RIS gives the ASNs actually announcing routes (the population, so dormant allocations don't inflate the rate); the five RIR delegated-extended files give country and RIR (the segments); the RPKI validated ROA payload gives which ASNs publish ROAs. Population unit: **ASN**; segmented by country and RIR.",
 "why_it_matters": "~37% of announcing networks publish no ROA. Their route origins cannot be validated, so a hijack of their prefixes is cryptographically indistinguishable from a legitimate announcement — traffic can be diverted with nothing to reject it.",
 "limits": "Measures **ROA publication, not per-prefix validation state** — an ASN with a ROA may still announce prefixes its ROAs don't cover. Segments are country/RIR, **not** company size: a different axis, stated as such rather than forced into the SME frame.",
 "data_tier": "routing",
 "population_predicate": "any",
 "entity_type": "asn",
 "kind": "failure",
 "latest": {
  "day": "2026-08-09",
  "n": 745,
  "qf_pct": 44.83,
  "ci": [
   41.3,
   48.42
  ],
  "dist": {
   "covered": 55.17,
   "uncovered": 44.83
  },
  "snapshot": "rpki-announcing-asns"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 741,
   "qf_pct": 45.21,
   "ci": [
    41.66,
    48.81
   ],
   "dist": {
    "covered": 54.79,
    "uncovered": 45.21
   },
   "snapshot": "rpki-announcing-asns"
  },
  {
   "day": "2026-08-02",
   "n": 741,
   "qf_pct": 45.21,
   "ci": [
    41.66,
    48.81
   ],
   "dist": {
    "covered": 54.79,
    "uncovered": 45.21
   },
   "snapshot": "rpki-announcing-asns"
  },
  {
   "day": "2026-08-04",
   "n": 741,
   "qf_pct": 45.07,
   "ci": [
    41.53,
    48.67
   ],
   "dist": {
    "covered": 54.93,
    "uncovered": 45.07
   },
   "snapshot": "rpki-announcing-asns"
  },
  {
   "day": "2026-08-05",
   "n": 741,
   "qf_pct": 44.94,
   "ci": [
    41.39,
    48.54
   ],
   "dist": {
    "covered": 55.06,
    "uncovered": 44.94
   },
   "snapshot": "rpki-announcing-asns"
  },
  {
   "day": "2026-08-09",
   "n": 745,
   "qf_pct": 44.83,
   "ci": [
    41.3,
    48.42
   ],
   "dist": {
    "covered": 55.17,
    "uncovered": 44.83
   },
   "snapshot": "rpki-announcing-asns"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/rpki-roa-coverage/jp"
}