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 jna.de
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- jna.de
- Valid from
- Jul 15, 2026
- Valid until
- Oct 13, 2026 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0529A580AC5BB2FF1C052F2C0AF5799E2F91
- SHA-256 fingerprint
- 36:3B:1C:99:B4:34:B3:77:B6:F7:6F:74:06:F5:1F:AC:B1:03:40:0E:53:ED:B8:4C:BC:72:F9:7F:5D:E1:FB:D7
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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