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 kftec.at
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- www.kftec.at
- Valid from
- May 14, 2026
- Valid until
- Aug 12, 2026 (17 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 057AF17F8E162DB2B4EC22B4C63956723201
- SHA-256 fingerprint
- 52:63:87:6A:61:FB:DD:5A:E8:37:4C:BD:F5:73:0A:4C:4B:33:62:53:9F:1B:BA:19:26:D9:4D:91:16:2B:67:24
- Chain
- R12 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
This certificate has been served since Jul 26, 2026.
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TLS certificate
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