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 knf.de

Valid
Issued by (CA)
Let's Encrypt
Subject
knf-flodos.ch
Valid from
May 28, 2026
Valid until
Aug 26, 2026 (36 days remaining)
Public key
RSA 2048-bit
Serial
067F6A60C19932141D3DEE719463C5A9096D
SHA-256 fingerprint
F7:3D:40:81:64:75:85:CE:CB:E2:13:21:91:21:C6:89:4E:D9:B3:45:2A:87:75:D9:0C:30:87:BA:01:BF:7A:6F
Chain
R13 → ISRG Root X1
Subject Alternative Names (58)
knf-flodos.ch, knf-flodos.com, knf-lab.co.uk, knf-lab.com, knf-lab.eu, knf-micro.ch, knf-starter.de, knf-starter.net, knf-verder.nl, knf.be, knf.ch, knf.co.jp, knf.co.uk, knf.com.cn, knf.com.sg, knf.de, knf.eu, knf.fr, knf.it, knf.se, knfkorea.com, knflab.co.uk, knflab.com, knflab.com.cn, knflab.de, knflab.jp, knflab.se, knfusa.com, www.knf-flodos.ch, www.knf-flodos.com, www.knf-lab.co.uk, www.knf-lab.com, www.knf-lab.eu, www.knf-micro.ch, www.knf-starter.de, www.knf-starter.net, www.knf-verder.nl, www.knf.be, www.knf.ch, www.knf.co.jp, www.knf.co.uk, www.knf.com, www.knf.com.cn, www.knf.com.sg, www.knf.de, www.knf.fr, www.knf.it, www.knf.se, www.knfkorea.com, www.knflab.ch, www.knflab.co.uk, www.knflab.com, www.knflab.com.cn, www.knflab.de, www.knflab.jp, www.knflab.se, www.knfpumps.in, www.knfusa.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.