SSL/TLS Certificate Lookup

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

openmac.com

SSL/TLS Certificate

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SSL/TLS Certificate for openmac.com

Valid
Issued by (CA)
Let's Encrypt
Subject
openmac.com
Valid from
Jul 5, 2026
Valid until
Oct 3, 2026 (74 days remaining)
Public key
EC 256-bit
Serial
05AFC70C1221D78E816F23CB2786ED19FD7C
SHA-256 fingerprint
52:30:9B:DA:9F:44:2C:19:1E:D9:9C:00:97:0A:A4:7B:60:7A:D2:9B:1A:68:0E:6F:F8:1A:0F:AF:14:1A:DF:ED
Chain
YE1 → Root YE → ISRG Root X2
Subject Alternative Names (2)
*.openmac.com, openmac.com

Certificate Authority Authorization (CAA)

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