SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
oer-mediaportal.education
SSL/TLS Certificate
SSL/TLS Certificate for oer-mediaportal.education
Self-signed- Issued by (CA)
- TRAEFIK DEFAULT CERT
- Subject
- TRAEFIK DEFAULT CERT
- Valid from
- Oct 27, 2026
- Valid until
- Oct 27, 2027 (350 days remaining)
- Public key
- RSA 2048-bit
- Serial
- B71C475DCE9CB0B9E56342E63EEF12C4
- SHA-256 fingerprint
- A2:8F:5A:D2:59:91:B9:7B:4D:32:CF:06:4A:75:42:16:B3:8F:F0:60:80:1A:D0:96:03:A5:DD:8C:D7:F2:F6:61
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 2 previous certificates for this host. This certificate has been served since Oct 11, 2026.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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