SSL/TLS Certificate Lookup

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

wikimedia.com

SSL/TLS Certificate

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SSL/TLS Certificate for wikimedia.com

Valid
Issued by (CA)
Amazon
Subject
wikimedia.com
Valid from
Apr 14, 2026
Valid until
Oct 28, 2026 (100 days remaining)
Public key
RSA 2048-bit
Serial
051A2B40B95BDBE4CDA8A30F8CFF3EED
SHA-256 fingerprint
66:F8:47:6A:92:A2:A9:F2:0A:46:26:95:51:10:0C:E5:D2:E8:88:B7:D1:B4:21:F5:93:78:9E:71:45:E0:08:B7
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (2)
wikimedia.com, www.wikimedia.com

Certificate Authority Authorization (CAA)

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