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 ciff.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ciff.dk
- Valid from
- Jun 17, 2026
- Valid until
- Sep 15, 2026 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05AFC4BC4B60589B148AB83878A36EE9D5EE
- SHA-256 fingerprint
- 4B:3C:5E:BD:1C:5A:C2:18:2B:E4:A6:F7:5F:6F:EA:0F:9C:22:7E:8D:A4:EA:52:0F:04:9A:C2:1B:CD:BE:97:65
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.