# Cloudflare Subdomain Finder via Certificate Transparency

**Use case:** 

Identify all active subdomains for cloudflare.com using Certificate Transparency logs. Data includes issuer, validity, and SAN domains.

## Input

```json
{
  "mode": "subdomains",
  "domains": [
    "stripe.com"
  ],
  "domain": "cloudflare.com",
  "daysBack": 7,
  "maxPerDomain": 300,
  "excludeExpired": true,
  "dedupBySerial": true,
  "useApifyProxy": true
}
```

## Output

```json
{
  "query": {
    "label": "Query",
    "format": "string"
  },
  "commonName": {
    "label": "Common name",
    "format": "string"
  },
  "issuerName": {
    "label": "Issuer",
    "format": "string"
  },
  "notBefore": {
    "label": "Valid from",
    "format": "string"
  },
  "notAfter": {
    "label": "Valid to",
    "format": "string"
  },
  "loggedDate": {
    "label": "Logged",
    "format": "string"
  },
  "isExpired": {
    "label": "Expired",
    "format": "boolean"
  },
  "certId": {
    "label": "crt.sh ID",
    "format": "integer"
  },
  "scrapedAt": {
    "label": "Scraped",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Certificate Transparency Monitor — AI Agent Recon API](https://apify.com/logiover/certificate-transparency-monitor) with a specific input configuration. Visit the [Actor detail page](https://apify.com/logiover/certificate-transparency-monitor) to learn more, explore other use cases, and run it yourself.