{
  "id": "cotoyogi",
  "name": "Cotoyogi",
  "operator": {
    "name": "ROIS-DS Data Lake Research and Development Center",
    "url": "https://ds.rois.ac.jp"
  },
  "description": "A research web crawler run by the Data Lake Research and Development Center of the Joint Support-Center for Data Science Research (ROIS-DS), Research Organization of Information and Systems, Japan. It collects Japanese-language web data for research use. The operator page documents RFC 9309 robots.txt handling with Crawl-delay support, robots meta tag support, and the address range the crawler requests from.",
  "docs": [
    "https://ds.rois.ac.jp/center8/crawler/"
  ],
  "category": "archiver",
  "user_agents": {
    "patterns": [
      "Cotoyogi/\\d"
    ],
    "instances": [
      "Mozilla/5.0 (compatible; Cotoyogi/4.0; +https://ds.rois.ac.jp/center8/crawler/)"
    ]
  },
  "behavior": {
    "respects_robots_txt": true,
    "robots_token": "Cotoyogi"
  },
  "verification": [
    {
      "type": "static_cidrs",
      "cidrs": [
        "157.1.136.4/30",
        "157.1.136.8/30"
      ]
    }
  ],
  "tier": 2,
  "tier_label": "Verifiable",
  "first_seen": "2026-08-25T13:21:31.852Z",
  "resolved_cidrs": [
    "157.1.136.4/30",
    "157.1.136.8/30"
  ]
}