SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for d-it.de
Self-signed- Issued by (CA)
- OPNsense
- Subject
- —
- Valid from
- Nov 26, 2020
- Valid until
- Mar 1, 2023 (expired 1349 days ago)
- Public key
- RSA 4096-bit
- Serial
- 5B0F893AA58A9F217E3A770E94EBE19D93F75012
- SHA-256 fingerprint
- 28:78:7C:A2:39:1D:85:B7:D1:DB:0C:05:66:2F:5C:59:4B:02:97:B0:47:22:FD:97:68:34:04:8D:9F:C7:65:61
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 19, 2026.
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Uptime
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DNS changes
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TLS certificate
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