yammer.com — Certificate History

View SSL certificate change history for yammer.com.

Last Checked: 2026-06-08T12:00:30Z · Issuer: Microsoft Corporation

ObservedValid FromValid ToIssuerFingerprint
2026-06-06T10:16:57Z2026-06-02 18:44:292026-11-29 18:44:29Microsoft Corporation3c3369c6ffcc3be2…

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