crates.io SSL certificate status
Valid — 149 days until expiry(crates.io)
This page shows the crates.io SSL certificate as served by crates.io, read from a live TLS handshake by an independent CertPost probe and rechecked hourly: expiry, issuer, hostname coverage, the full chain, and the negotiated protocol.
Last checked 2026-09-20 07:45 UTC. CertPost is not affiliated with crates.io.
Certificate details
Hostnames this certificate covers
crates.io, fastly-app.crates.io
Certificate chain as served
Common questions
Is the crates.io SSL certificate expired?
At the last check, the certificate crates.io serves was within its validity period. It expires on 2027-02-16, 149 days from that check.
When does the crates.io SSL certificate expire?
The certificate crates.io is currently serving expires on 2027-02-16 (149 days from the last check). Large services rotate certificates long before that date.
Who issued the crates.io SSL certificate?
The certificate was issued by GlobalSign Atlas R3 DV TLS CA 2025 Q4.
How is this checked?
A CertPost probe opens a real TLS connection to crates.io on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.
crates.io rotates certificates without downtime. Your own domains are the ones that expire quietly — watch 3 free, no card.
Monitor your certificatesOr run a one-off check with the free SSL checker.