SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ostara-akademie.org
SSL/TLS Certificate
SSL/TLS Certificate for ostara-akademie.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ostara-akademie.org
- Valid from
- Jun 29, 2026
- Valid until
- Sep 27, 2026 (60 days remaining)
- Public key
- EC 256-bit
- Serial
- 05156373F8CB65318A7617AA1D48B41C6BED
- SHA-256 fingerprint
- 00:66:78:F6:FD:E2:A3:9A:16:59:66:A1:30:1F:E1:EA:4B:DF:08:EB:88:82:3A:A3:C3:A9:55:2C:CB:F1:78:DB
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
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Uptime
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DNS changes
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TLS certificate
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