Medium SSL certificate status
Valid — 75 days until expiry(medium.com)
This page shows the Medium SSL certificate as served by medium.com, 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 07:44 UTC. CertPost is not affiliated with Medium.
Certificate details
Hostnames this certificate covers
medium.com, *.medium.com
Certificate chain as served
Common questions
Is the Medium SSL certificate expired?
At the last check, the certificate medium.com serves was within its validity period. It expires on 2026-12-04, 75 days from that check.
When does the Medium SSL certificate expire?
The certificate medium.com is currently serving expires on 2026-12-04 (75 days from the last check). Large services rotate certificates long before that date.
Who issued the Medium SSL certificate?
The certificate was issued by WE1.
How is this checked?
A CertPost probe opens a real TLS connection to medium.com on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.
Medium 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.