SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

flu-test.co.uk

SSL/TLS Certificate

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SSL/TLS Certificate for flu-test.co.uk

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
*.smi.uk
Valid from
Jul 20, 2026
Valid until
Oct 18, 2026 (88 days remaining)
Public key
RSA 2048-bit
Serial
05922E4BA40F2F9FE75A45AAB1127A34B6D9
SHA-256 fingerprint
5E:FC:C9:1A:10:95:09:00:E7:F3:B1:1B:EC:2A:E3:41:49:41:82:F9:83:71:A4:72:37:C6:7E:E7:F6:02:EE:64
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (4)
*.domain-parking.uk, *.smi.uk, domain-parking.uk, smi.uk

Certificate Authority Authorization (CAA)

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