SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
vitamine-b12.net
SSL/TLS Certificate
SSL/TLS Certificate for vitamine-b12.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.rooibos.oxalsaeure.net
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 050A4F28265E276E910C7D35C24FCC3BCDE7
- SHA-256 fingerprint
- 33:12:0B:95:40:40:A0:5D:DE:20:10:6C:AA:58:C8:2A:38:8C:F9:E9:3C:11:D5:58:E2:DD:E1:B8:F1:60:FF:DB
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 6, 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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