SSL/TLS Certificate Lookup

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

spamtest.io

SSL/TLS Certificate

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SSL/TLS Certificate for spamtest.io

Valid
Issued by (CA)
Let's Encrypt
Subject
spamtest.io
Valid from
Jun 4, 2026
Valid until
Sep 2, 2026 (42 days remaining)
Public key
EC 256-bit
Serial
06681198B93336A2BF0E86AB9B3F05FDC48A
SHA-256 fingerprint
E4:7E:C8:2C:59:1B:12:D9:FA:34:88:6C:B2:46:24:1E:03:FF:C9:80:D7:60:FC:06:D9:38:B7:5E:2F:56:CB:3A
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
spamtest.io, www.spamtest.io

Certificate Authority Authorization (CAA)

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