A simple DNS lookup tool
Domain 4.36.167.81
Type PTR
Server Cloudflare
Duration 21 ms
Results
JSON ZONE 
{
  "status": "NOERROR",
  "from": "1.1.1.1",
  "answer": [
    {
      "type": "PTR",
      "name": "lag-31-258-99.ear2.Seattle1.Level3.net",
      "ttl": 86400
    }
  ]
}
This Lookup
Realtime Lookup