逆引きIP検索（廃止予定）

{
  "query": {
    "ip": "93.184.216.34",
    "asn": null,
    "expand": "none"
  },
  "deprecated": true,
  "deprecation_notice": "This endpoint is deprecated. It only searches DomScan passive cache entries from prior API lookups and is not an internet-wide reverse DNS dataset.",
  "ip_context": {
    "ip": "93.184.216.34",
    "type": "public",
    "label": "Public routable"
  },
  "results": [],
  "summary": {
    "total_found": 0,
    "returned": 0
  },
  "page": {
    "limit": 100,
    "next_cursor": null
  },
  "meta": {
    "source": "passive_dns",
    "note": "Results limited to domains previously queried through this API"
  },
  "cache": {
    "hit": true,
    "age_s": 42,
    "ttl_s": 900,
    "key": "cache:example"
  }
}