{
  "id": "quantcast-crawler",
  "name": "Quantcastbot",
  "operator": {
    "name": "Quantcast",
    "url": "https://www.quantcast.com"
  },
  "description": "Quantcast's advertising crawler. It crawls websites to extract page content for interest-based audience categorization and to run quality-assurance checks on advertisement landing pages.",
  "docs": [
    "https://www.quantcast.com/bot"
  ],
  "category": "search-engine",
  "user_agents": {
    "patterns": [
      "Quantcastbot/\\d"
    ],
    "instances": [
      "Quantcastbot/1.0 (+https://www.quantcast.com/bot)",
      "Quantcastbot/2.0 (+https://www.quantcast.com/bot)"
    ]
  },
  "behavior": {
    "respects_robots_txt": true
  },
  "verification": [
    {
      "type": "static_cidrs",
      "cidrs": [
        "52.34.88.131/32",
        "54.71.154.151/32",
        "192.184.74.253/32",
        "192.184.75.253/32",
        "192.184.76.253/32",
        "192.184.77.253/32",
        "103.229.11.253/32"
      ]
    }
  ],
  "tier": 2,
  "tier_label": "Verifiable",
  "first_seen": "2026-07-16T00:59:46.504Z",
  "resolved_cidrs": [
    "103.229.11.253/32",
    "192.184.74.253/32",
    "192.184.75.253/32",
    "192.184.76.253/32",
    "192.184.77.253/32",
    "52.34.88.131/32",
    "54.71.154.151/32"
  ]
}