SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

ec2-3-121-36-69.eu-central-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-3-121-36-69.eu-central-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
grafana.knhbt.cz
Valid from
Sep 28, 2026
Valid until
Apr 13, 2027 (160 days remaining)
Public key
RSA 2048-bit
Serial
09E71C07527F11219DA23E1C0E6A4E9C
SHA-256 fingerprint
3D:43:1E:1C:88:AE:23:2D:E0:83:6E:B4:B1:1B:B0:C3:1D:4D:EB:4D:3A:EE:E8:FB:33:A4:E6:D5:8C:EF:17:BC
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (6)
argocd.knhbt.cz, grafana.knhbt.cz, kafka-ui.knhbt.cz, knihobot.knhbt.cz, php.knihobot.knhbt.cz, ucetnictvi-new.knhbt.cz

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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Uptime

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DNS changes

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TLS certificate

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