{
  "id": "updown-io",
  "name": "updown.io",
  "operator": {
    "name": "updown.io",
    "url": "https://updown.io"
  },
  "description": "Website uptime-monitoring service that checks customer sites from a published JSON array of node IPs. Documents \"updown.io\" as the common substring of its requests rather than one fixed User-Agent.",
  "docs": [
    "https://updown.io/api"
  ],
  "category": "monitoring",
  "user_agents": {
    "patterns": [
      "updown\\.io"
    ],
    "instances": [
      "updown.io daemon"
    ]
  },
  "behavior": {
    "respects_robots_txt": false
  },
  "verification": [
    {
      "type": "cidr_feed",
      "url": "https://updown.io/api/nodes/ips.json",
      "format": "json_array"
    }
  ],
  "tier": 1,
  "tier_label": "Fully verifiable",
  "first_seen": "2026-07-08T19:13:49.571Z",
  "resolved_cidrs": [
    "102.212.60.78/32",
    "104.238.136.194/32",
    "104.238.159.87/32",
    "135.181.102.135/32",
    "172.105.96.222/32",
    "178.63.21.176/32",
    "2001:19f0:4400:402e::1/128",
    "2001:19f0:5801:1d8::1/128",
    "2001:19f0:6001:2c6::1/128",
    "2001:19f0:6c01:145::1/128",
    "2001:19f0:7001:45a::1/128",
    "2001:19f0:9002:11a::1/128",
    "2001:41d0:2:85af::1/128",
    "2600:3c04:e001:37f::1/128",
    "2a01:4f8:141:441a::2/128",
    "2a01:4f9:c010:d5f9::1/128",
    "2c0f:c40:4003:4::2/128",
    "45.32.107.181/32",
    "45.32.74.41/32",
    "45.63.29.207/32",
    "45.76.104.117/32",
    "91.121.222.175/32"
  ]
}