DNS 查询 API

{
  "domain": "google.com",
  "record_type": "TXT",
  "records": [
    {
      "type": "TXT",
      "name": "google.com",
      "data": "v=spf1 include:_spf.google.com ~all",
      "ttl": 300,
      "classification": "spf"
    },
    {
      "type": "TXT",
      "name": "google.com",
      "data": "google-site-verification=abc123",
      "ttl": 300,
      "classification": "verification"
    }
  ],
  "status": "success",
  "dnssec_validated": false,
  "query_time_ms": 37,
  "checked_at": "2026-04-18T21:00:00Z",
  "warnings": [
    {
      "code": "TXT_MULTIPLE_RESPONSES",
      "message": "Domain publishes multiple TXT records; use classification to isolate the security ones.",
      "severity": "info"
    }
  ]
}