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 sdmdi.pt
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.sdmdi.optimeios.com
- Valid from
- Jul 2, 2026
- Valid until
- Sep 30, 2026 (70 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B7BB53B5CF3BB31341D4496E28AF738597
- SHA-256 fingerprint
- 15:88:3E:19:E2:C7:9B:B6:87:C9:36:84:AF:51:6E:A0:26:5A:46:61:56:AD:05:8E:EC:2A:F4:EA:D5:77:24:1F
- 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.