Free tools
Free tools for checking certificates and domains.
No account, no email gate. Each one runs a real check against the public internet and shows you what it found.
- 0120/hour
SSL certificate checker
Type a hostname. We open a TLS connection like a browser would and tell you what the certificate says, and what it doesn't.
- 0220/hour
Domain expiry checker
Enter a domain. We ask its registry over RDAP when it expires, who the registrar is and whether anything about its status looks wrong.
- 035/hour
Bulk SSL checker
Paste up to 25 hostnames. You get one table of what's fine and what isn't, and a CSV you can keep.
- 045/hour
Find subdomains from certificate logs
Enter a root domain. We search the public Certificate Transparency logs and list every host that has had a certificate, with its latest expiry date.
- 053/hour
47-day certificate readiness checker
Enter a root domain. We find its hosts, check each certificate and score how many renew themselves. The rest become your to-do list before 2027.
Start with five domains, free.
The free plan watches 5 domains for one client: certificates, domain registration, DNS and uptime every 15 minutes. No card, no trial clock.