🔒 SSL certificate check

Expiry date, days left, issuer, SANs, negotiated TLS version, and whether the chain, hostname and trust are in order.

70d

Valid · 70 days left

Expires 2026-11-29 23:59 UTC

https://github.com · checked 2026-09-20 01:58 UTC from Vigil's servers

trusted TLSv1.3

Checks

✓	Trusted chain issuer is a public CA and intermediates are served	pass
✓	Hostname matches certificate covers github.com	pass
✓	Not expired 70 days left	pass
✓	Not self-signed issued by Sectigo Limited	pass
✓	Modern TLS negotiated TLSv1.3 · TLS_AES_128_GCM_SHA256	pass

Certificate

Subject: github.com
Issuer: Sectigo Limited (Sectigo Public Server Authentication CA DV E36)
Valid from: 2026-09-01 00:00 UTC
Valid until: 2026-11-29 23:59 UTC (70 days)
Serial: a59ebdb596751db7f5c095079613953c
Protocol: TLSv1.3 · TLS_AES_128_GCM_SHA256
SANs (2): github.comwww.github.com

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