GitHub SSL certificate status
Valid — 38 days until expiry(github.com)
This page shows the GitHub SSL certificate as served by github.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 2026-08-23 00:47 UTC. CertPost is not affiliated with GitHub.
Certificate details
Hostnames this certificate covers
github.com, www.github.com
Certificate chain as served
Common questions
Is the GitHub SSL certificate expired?
At the last check, the certificate github.com serves was within its validity period. It expires on 2026-09-30, 38 days from that check.
When does the GitHub SSL certificate expire?
The certificate github.com is currently serving expires on 2026-09-30 (38 days from the last check). Large services rotate certificates long before that date.
Who issued the GitHub SSL certificate?
The certificate was issued by Sectigo Public Server Authentication CA DV E36.
How is this checked?
A CertPost probe opens a real TLS connection to github.com on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.
GitHub 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.