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Certificate Transparency log search

Documented CT index

Search a domain's current unexpired certificate issuances in SSLMate's Cert Spotter index, with explicit source attribution and first-page limits.

The normalized domain is sent only to the fixed Cert Spotter API with a 15-second deadline. Results are cached in memory for 15 minutes.

Not searched yetEnter a registered domain or subdomain. URLs, wildcards, email addresses, and IP addresses are rejected.

What this result does—and does not—show

Certificate Transparency logs are public, append-only records. This tool uses SSLMate's documented Cert Spotter index, which coalesces certificate and precertificate entries and returns currently unexpired issuances. It does not query arbitrary URLs or individual log hosts.

Only the provider's first page—currently up to 100 issuances—is shown. A “more results available” state means the answer is intentionally incomplete. CT appearance does not prove that a certificate is deployed, trusted, authorized, or still usable; investigate unexpected names with the issuer and domain owner.

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