TLS & Certificate Insights
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Featured · Web PKI
Public TLS certificates are now capped at 200 days: what changed in 2026
From 15 March 2026 a newly issued publicly trusted subscriber certificate may be valid for at most 200 days. Existing certificates keep their original expiry.
Published 2026-09-21
ACME
Let’s Encrypt six-day certificates and IP address certificates: what they change
Short-lived and IP-address certificates change operational tempo. They do not change the need to verify what the endpoint serves.
2026-09-21
ACME
ACME Renewal Information (ARI): smarter renewal scheduling explained
ARI lets a CA suggest when to renew so everyone does not hit the same hour. It is not a replacement for inventory.
2026-09-21
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