A simple DNS lookup tool
Domain 104.168.141.164
Type PTR
Server Quad9
Duration 46 ms
Results
JSON ZONE 
{
  "status": "NOERROR",
  "from": "9.9.9.9",
  "answer": [
    {
      "type": "PTR",
      "name": "smart.iot.asu.edu",
      "ttl": 14400
    }
  ]
}
This Lookup
Realtime Lookup