Subdomain Finder - Discover Subdomains via CT Logs
Discover every subdomain of any domain using Certificate Transparency logs (crt.sh). Fast bulk subdomain enumeration for security recon, attack-surface mapping, asset discovery and SEO. No API key — export to CSV or JSON.
Charged only on successful results.
Clean schema, ready for ETL.
5 users total
No setup — runs in the cloud on Apify.
What it returns
Discover every subdomain of any domain using Certificate Transparency logs (crt.sh).
How to run it
- Open the actor on Apify (button above).
- Fill the input schema — most fields have sensible defaults.
- Click Run. Results land in the dataset within minutes.
- Export as JSON or CSV, or pull via the dataset API.
Guides for this scraper
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