columbia.edu — Certificate History

View SSL certificate change history for columbia.edu.

Last Checked: 2026-06-07T20:00:12Z · Issuer: Google Trust Services

ObservedValid FromValid ToIssuerFingerprint
2026-06-06T10:16:43Z2026-05-17 08:34:142026-08-15 09:34:03Google Trust Servicese9b0029a78f549e1…

← columbia.edu