proofpoint.com — Certificate History

View SSL certificate change history for proofpoint.com.

Last Checked: 2026-06-08T12:00:25Z · Issuer: Sectigo Limited

ObservedValid FromValid ToIssuerFingerprint
2026-06-06T10:16:53Z2025-08-11 00:00:002026-08-11 23:59:59Sectigo Limitedab6fb5944993c84c…

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