SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kon-sec.hu
SSL/TLS Certificate
SSL/TLS Certificate for kon-sec.hu
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- szerver.whiszerver12.hu
- Valid from
- Jul 3, 2026
- Valid until
- Oct 1, 2026 (55 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A8A6DF025015DAFB131D0ED49AD1234093
- SHA-256 fingerprint
- EB:F8:76:F2:0F:E3:FB:C6:5D:FC:C2:F5:C3:6D:49:AC:65:90:E6:8A:29:74:BF:04:52:14:3B:9A:1C:E4:32:79
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
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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