A simple DNS lookup tool
Domain 172.64.32.122
Type PTR
Server Quad9
Duration 10 ms
Results
JSON ZONE 
{
  "status": "NOERROR",
  "from": "9.9.9.9",
  "answer": [
    {
      "type": "PTR",
      "name": "jill.ns.cloudflare.com",
      "ttl": 1800
    }
  ]
}
This Lookup
Realtime Lookup