Radardue
Free tool · no signup

Will your renewals survive 64-day certificates?

Type a domain. Radardue finds every hostname under it in public Certificate Transparency logs, checks what each one serves today, and flags renewals that will break when Let's Encrypt certificates drop to 64 days on 10 Feb 2027.

Takes up to a minute while the public logs are searched.
01

Every hostname

Certificate Transparency logs list every public certificate, so forgotten staging sites and VPN portals show up too.

02

What each serves

A live TLS check of each host: expiry date, issuer, and whether the chain validates.

03

Renewal habit

The gap between past renewals. A fixed ~60-day cycle leaves almost no margin with 64-day certificates.

Key dates

10 Feb 2027 Let's Encrypt issues 64-day certificates by default. 15 Mar 2027 every public certificate is capped at 100 days. 16 Feb 2028 Let's Encrypt moves to 45 days. What changes and how to prepare →