SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
spielplan-semperoper.org
SSL/TLS Certificate
SSL/TLS Certificate for spielplan-semperoper.org
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- service.semperoper.de
- Valid from
- Aug 25, 2026
- Valid until
- Nov 23, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0639E3542EB2237DEF7E16F945347195FEEE
- SHA-256 fingerprint
- A3:AD:0F:86:DE:9B:BE:2C:9F:98:29:62:89:F6:D0:D9:52:82:82:33:38:2F:0F:F4:20:58:E8:C5:E6:F2:E5:7B
- Chain
- YR2 → Root YR → ISRG Root X1
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 Sep 14, 2026.
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TLS certificate
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