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 sdtc.dk
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- sdtc.dk
- Valid from
- Jun 23, 2026
- Valid until
- Sep 21, 2026 (61 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 055AF27F71CB2042F6664001271B1C2128CF
- SHA-256 fingerprint
- 7B:33:28:93:54:A9:A6:71:D4:5B:D1:FD:06:62:78:64:72:28:CA:19:83:12:52:87:40:72:E0:D0:84:3A:FE:18
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.