{
  "meta": {
    "subject": "Roblox group 5901383",
    "retrieved": "2026-09-09T09:08:17.775Z",
    "licence": "Measured by roregister.com from public Roblox APIs. Free to reuse with attribution to roregister.com. Not affiliated with Roblox Corporation.",
    "notes": {
      "member_history": "insert-on-change; a point exists only where the value differed from the prior reading.",
      "detection_dates": "ownership/name changes are dated when this register observed them, not when they happened."
    }
  },
  "group": {
    "id": 5901383,
    "name": "[Köln] Berufsfeuerwehr Köln",
    "created": "2020-04-05T16:34:23.050Z",
    "owner_user_id": 329366142,
    "member_count": 2761,
    "has_verified_badge": false,
    "is_locked": false,
    "status": "live",
    "first_measured": "2026-08-10T11:47:39.166Z",
    "last_measured": "2026-09-09T08:21:34.020Z"
  },
  "member_history": [
    {
      "measured_at": "2026-08-10T11:47:39.166Z",
      "member_count": 2764
    },
    {
      "measured_at": "2026-08-13T17:00:54.874Z",
      "member_count": 2763
    },
    {
      "measured_at": "2026-08-13T17:10:48.215Z",
      "member_count": 2762
    },
    {
      "measured_at": "2026-08-19T18:51:30.586Z",
      "member_count": 2761
    },
    {
      "measured_at": "2026-08-23T16:00:54.962Z",
      "member_count": 2762
    },
    {
      "measured_at": "2026-09-04T15:13:19.729Z",
      "member_count": 2761
    }
  ],
  "name_history": [
    {
      "name": "[Köln] Berufsfeuerwehr Köln",
      "first_seen": "2026-08-10T11:47:39.166Z",
      "last_seen": "2026-09-09T08:21:34.020Z",
      "current": true
    }
  ],
  "ownership_events": [
    {
      "observed_at": "2026-08-10T14:09:01.936Z",
      "previous_owner": null,
      "new_owner": 329366142
    }
  ]
}