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The data presented here is derived from Certificate Transparency logs currently monitored by Cloudflare. Learn how CT monitoring works.

Certificate characteristics

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Information on the technical makeup of certificates

Certificate issuance

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Certificate issuance is the process by which CAs generate digital certificates for domain owners. CAs are often operated by larger organizations, who may manage multiple subordinate CAs under a single corporate umbrella

Certificate Transparency logs

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CT logs are "append-only" and publicly-auditable ledgers of certificates being created, updated, and expired

Certificate coverage

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A certificate can cover multiple top-level domains (TLDs), include wildcard entries, and support IP addresses in Subject Alternative Names (SANs)

Latest Certificates Transparency blog posts

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Posts tagged with "Certificates Transparency" from the Cloudflare blog

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