​
Subdomains

The subdomains endpoint runs WithGiga’s seven-source passive OSINT enumeration as a standalone operation — useful for surface discovery before scoping an engagement, or for keeping a continuously-updated inventory. See Subdomain Enumeration for the methodology.

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Start a subdomain scan

POST /api/subdomains Body 
{
  "domain": "acme.example.com"
}
FieldTypeDescription
domainstringApex or subdomain to enumerate from
Response (201) 
{
  "success": true,
  "data": {
    "runId": "sub_abc123",
    "domain": "acme.example.com",
    "status": "running",
    "createdAt": "2026-05-18T12:00:00.000Z"
  }
}
The scan runs asynchronously. Poll the runId endpoint for results.

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Get scan results

GET /api/subdomains/{runId} Response (200) 
{
  "success": true,
  "data": {
    "runId": "sub_abc123",
    "domain": "acme.example.com",
    "status": "completed",
    "subdomains": [
      {
        "hostname": "app.acme.example.com",
        "sources": ["crtsh", "urlscan", "wayback"],
        "alive": true,
        "ports": [80, 443],
        "stack": ["nginx/1.24.0", "cloudflare"]
      },
      {
        "hostname": "admin.acme.example.com",
        "sources": ["crtsh"],
        "alive": true,
        "ports": [443],
        "stack": ["nginx/1.24.0"]
      },
      {
        "hostname": "old-staging.acme.example.com",
        "sources": ["wayback"],
        "alive": false
      }
    ],
    "summary": {
      "total": 47,
      "alive": 18,
      "uniqueSources": 7
    },
    "createdAt": "2026-05-18T12:00:00.000Z",
    "completedAt": "2026-05-18T12:01:42.000Z"
  }
}
StatusDescription
runningSources are being queried
completedAll sources returned, results validated
failedUnrecoverable error during enumeration

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Notes

  • Enumeration is passive only — no traffic is sent to the target’s infrastructure during source queries
  • Validation (alive check, port scan, stack fingerprint) does generate traffic to the target
  • Results are cached briefly; calling again for the same domain within 60 seconds may return the same scan