dnsniffer.com
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Contact us

Bug report, feature request, partnership, or just saying hi - drop a message.

~/message.txt
# get in touch
[email protected]
reply within 24h
# faq
▸ How do I get started?
Search at /search - no signup required. Sign up only to create custom exports.
▸ What data sources do you use?
Certificate Transparency logs (Google, Cloudflare, Sectigo, DigiCert, etc.) and ICANN CZDS zone files.
▸ Is there an API?
Yes. Read-only JSON at /api/v1, documented at /docs/api. No key needed.
▸ Can I download bulk lists?
Daily CSV exports per TLD and per cert issuer. See /datasets.