{
  "vantages": [
    "ams3",
    "sfo3",
    "nyc3",
    "ca-tunnel",
    "sgp1"
  ],
  "hosts": 1000000,
  "per_vantage": {
    "ams3": {
      "hosts_probed": 1000000,
      "has_aaaa": 345100,
      "has_aaaa_pct": 34.5,
      "v6_reachable": 320826,
      "v6_reachable_pct": 32.1,
      "median_v6_connect_ms": 2.1,
      "median_v4_connect_ms": 2.0,
      "window_start_utc": "2026-07-13T21:50:08+00:00",
      "window_end_utc": "2026-07-14T00:54:03+00:00",
      "window_hours": 3.07
    },
    "sfo3": {
      "hosts_probed": 1000000,
      "has_aaaa": 345527,
      "has_aaaa_pct": 34.6,
      "v6_reachable": 320879,
      "v6_reachable_pct": 32.1,
      "median_v6_connect_ms": 3.7,
      "median_v4_connect_ms": 3.4,
      "window_start_utc": "2026-07-13T21:50:11+00:00",
      "window_end_utc": "2026-07-14T12:17:42+00:00",
      "window_hours": 14.46
    },
    "nyc3": {
      "hosts_probed": 1000000,
      "has_aaaa": 345898,
      "has_aaaa_pct": 34.6,
      "v6_reachable": 320689,
      "v6_reachable_pct": 32.1,
      "median_v6_connect_ms": 2.5,
      "median_v4_connect_ms": 2.5,
      "window_start_utc": "2026-07-13T21:50:11+00:00",
      "window_end_utc": "2026-07-15T04:13:55+00:00",
      "window_hours": 30.4
    },
    "ca-tunnel": {
      "hosts_probed": 1000000,
      "has_aaaa": 343173,
      "has_aaaa_pct": 34.3,
      "v6_reachable": 320590,
      "v6_reachable_pct": 32.1,
      "median_v6_connect_ms": 3.6,
      "median_v4_connect_ms": 1.8,
      "window_start_utc": "2026-07-13T21:50:15+00:00",
      "window_end_utc": "2026-07-14T00:16:26+00:00",
      "window_hours": 2.44
    },
    "sgp1": {
      "hosts_probed": 1000000,
      "has_aaaa": 346727,
      "has_aaaa_pct": 34.7,
      "v6_reachable": 319626,
      "v6_reachable_pct": 32.0,
      "median_v6_connect_ms": 3.5,
      "median_v4_connect_ms": 3.2,
      "window_start_utc": "2026-07-13T21:50:16+00:00",
      "window_end_utc": "2026-07-14T15:25:41+00:00",
      "window_hours": 17.59
    }
  },
  "hosts_probed_from_all_vantages": 1000000,
  "consensus": {
    "hosts_with_aaaa_anywhere": 357282,
    "aaaa_presence_distribution": {
      "aaaa_at_0_of_5": 642718,
      "aaaa_at_1_of_5": 11429,
      "aaaa_at_2_of_5": 2968,
      "aaaa_at_3_of_5": 1521,
      "aaaa_at_4_of_5": 2323,
      "aaaa_at_5_of_5": 339041
    },
    "v6_reachability_distribution": {
      "reachable_from_0_of_5": 34973,
      "reachable_from_1_of_5": 485,
      "reachable_from_2_of_5": 590,
      "reachable_from_3_of_5": 770,
      "reachable_from_4_of_5": 3685,
      "reachable_from_5_of_5": 316779
    },
    "reachable_everywhere": 316779,
    "partially_reachable": 5530,
    "unreachable_everywhere_but_v4_alive": 10082,
    "unreachable_everywhere_and_v4_dead": 24891,
    "geo_dns_divergent": 112248
  },
  "temporal_skew": {
    "note": "Gaps computed from per-record ts across vantages, in hours. Inputs were pass-combined; the surviving ts is from pass 2 (verified), so gaps reflect pass-2 observation times.",
    "max_inter_vantage_gap": {
      "all_complete_hosts": {
        "hosts": 1000000,
        "median_h": 13.3,
        "p90_h": 24.76,
        "p99_h": 27.68,
        "max_h": 27.96
      },
      "partially_reachable": {
        "hosts": 5530,
        "median_h": 11.33,
        "p90_h": 23.92,
        "p99_h": 27.66,
        "max_h": 27.95
      },
      "geo_dns_divergent": {
        "hosts": 112248,
        "median_h": 13.08,
        "p90_h": 24.94,
        "p99_h": 27.67,
        "max_h": 27.96
      }
    }
  },
  "examples": {
    "partially_reachable": [
      {
        "rank": 96,
        "host": "www.ncbi.nlm.nih.gov",
        "reachable_from": [
          "ams3",
          "sfo3",
          "ca-tunnel",
          "sgp1"
        ]
      },
      {
        "rank": 259,
        "host": "pbs.twimg.com",
        "reachable_from": [
          "ams3",
          "sfo3",
          "sgp1"
        ]
      },
      {
        "rank": 392,
        "host": "mp.weixin.qq.com",
        "reachable_from": [
          "ams3",
          "sfo3",
          "ca-tunnel",
          "sgp1"
        ]
      },
      {
        "rank": 394,
        "host": "www.gnu.org",
        "reachable_from": [
          "ca-tunnel"
        ]
      },
      {
        "rank": 590,
        "host": "www.fedex.com",
        "reachable_from": [
          "ams3",
          "sfo3",
          "ca-tunnel",
          "sgp1"
        ]
      },
      {
        "rank": 623,
        "host": "www.php.net",
        "reachable_from": [
          "ams3",
          "sfo3",
          "nyc3",
          "sgp1"
        ]
      },
      {
        "rank": 632,
        "host": "static.parastorage.com",
        "reachable_from": [
          "sgp1"
        ]
      },
      {
        "rank": 667,
        "host": "www.ups.com",
        "reachable_from": [
          "ams3",
          "sfo3",
          "sgp1"
        ]
      },
      {
        "rank": 750,
        "host": "www.iubenda.com",
        "reachable_from": [
          "ams3",
          "sfo3",
          "nyc3",
          "sgp1"
        ]
      },
      {
        "rank": 820,
        "host": "www.foxnews.com",
        "reachable_from": [
          "ams3",
          "ca-tunnel",
          "sgp1"
        ]
      },
      {
        "rank": 824,
        "host": "zonely.gen.tr",
        "reachable_from": [
          "sfo3",
          "nyc3",
          "sgp1"
        ]
      },
      {
        "rank": 961,
        "host": "siteassets.parastorage.com",
        "reachable_from": [
          "sgp1"
        ]
      },
      {
        "rank": 1170,
        "host": "plausible.io",
        "reachable_from": [
          "ams3",
          "sfo3",
          "nyc3",
          "sgp1"
        ]
      },
      {
        "rank": 1341,
        "host": "www.foxbusiness.com",
        "reachable_from": [
          "ams3",
          "sgp1"
        ]
      },
      {
        "rank": 1667,
        "host": "112journaal.nl",
        "reachable_from": [
          "ams3",
          "ca-tunnel"
        ]
      }
    ],
    "broken_v6_everywhere": [
      {
        "rank": 980,
        "host": "www.thelancet.com"
      },
      {
        "rank": 1028,
        "host": "www.bptk.de"
      },
      {
        "rank": 2194,
        "host": "www.cell.com"
      },
      {
        "rank": 2408,
        "host": "gallica.bnf.fr"
      },
      {
        "rank": 2670,
        "host": "travel.state.gov"
      },
      {
        "rank": 2874,
        "host": "www.chase.com"
      },
      {
        "rank": 2951,
        "host": "www.enisa.europa.eu"
      },
      {
        "rank": 2982,
        "host": "www.ncei.noaa.gov"
      },
      {
        "rank": 3057,
        "host": "www.fontsquirrel.com"
      },
      {
        "rank": 3147,
        "host": "www.flipkart.com"
      },
      {
        "rank": 3345,
        "host": "www.royalmail.com"
      },
      {
        "rank": 3453,
        "host": "plot.ly"
      },
      {
        "rank": 3668,
        "host": "linkinghub.elsevier.com"
      },
      {
        "rank": 3986,
        "host": "www.rt.com"
      },
      {
        "rank": 4086,
        "host": "quizlet.com"
      }
    ],
    "geo_dns_divergent": [
      {
        "rank": 1,
        "host": "www.facebook.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 2,
        "host": "fonts.googleapis.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 4,
        "host": "www.googletagmanager.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 5,
        "host": "www.instagram.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 6,
        "host": "www.youtube.com",
        "distinct_aaaa_sets": 4
      },
      {
        "rank": 9,
        "host": "fonts.gstatic.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 11,
        "host": "ajax.googleapis.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 12,
        "host": "youtu.be",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 14,
        "host": "en.wikipedia.org",
        "distinct_aaaa_sets": 4
      },
      {
        "rank": 16,
        "host": "support.google.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 18,
        "host": "docs.google.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 19,
        "host": "play.google.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 20,
        "host": "instagram.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 22,
        "host": "maps.google.com",
        "distinct_aaaa_sets": 5
      },
      {
        "rank": 23,
        "host": "policies.google.com",
        "distinct_aaaa_sets": 5
      }
    ]
  },
  "pairwise_reachability_disagreement": {
    "ams3|sfo3": {
      "hosts": 348676,
      "disagree": 1361,
      "disagree_pct": 0.39
    },
    "ams3|nyc3": {
      "hosts": 349078,
      "disagree": 1999,
      "disagree_pct": 0.57
    },
    "ams3|ca-tunnel": {
      "hosts": 348426,
      "disagree": 2234,
      "disagree_pct": 0.64
    },
    "ams3|sgp1": {
      "hosts": 349879,
      "disagree": 2750,
      "disagree_pct": 0.79
    },
    "sfo3|nyc3": {
      "hosts": 348855,
      "disagree": 1534,
      "disagree_pct": 0.44
    },
    "sfo3|ca-tunnel": {
      "hosts": 348692,
      "disagree": 2051,
      "disagree_pct": 0.59
    },
    "sfo3|sgp1": {
      "hosts": 350135,
      "disagree": 2929,
      "disagree_pct": 0.84
    },
    "nyc3|ca-tunnel": {
      "hosts": 349128,
      "disagree": 2655,
      "disagree_pct": 0.76
    },
    "nyc3|sgp1": {
      "hosts": 350725,
      "disagree": 3417,
      "disagree_pct": 0.97
    },
    "ca-tunnel|sgp1": {
      "hosts": 350227,
      "disagree": 3910,
      "disagree_pct": 1.12
    }
  },
  "v6_vs_v4_latency": {
    "ams3": {
      "dual_stack_hosts": 320257,
      "median_v6_minus_v4_connect_ms": 0.2,
      "v6_faster_pct": 39.5
    },
    "sfo3": {
      "dual_stack_hosts": 320385,
      "median_v6_minus_v4_connect_ms": 0.4,
      "v6_faster_pct": 41.8
    },
    "nyc3": {
      "dual_stack_hosts": 320167,
      "median_v6_minus_v4_connect_ms": 0.2,
      "v6_faster_pct": 40.8
    },
    "ca-tunnel": {
      "dual_stack_hosts": 320243,
      "median_v6_minus_v4_connect_ms": 1.5,
      "v6_faster_pct": 21.7
    },
    "sgp1": {
      "dual_stack_hosts": 318903,
      "median_v6_minus_v4_connect_ms": 0.6,
      "v6_faster_pct": 37.1
    }
  }
}