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 e-wikipedia.org

Valid
Issued by (CA)
Let's Encrypt
Subject
wikimedia.co.za
Valid from
Jun 18, 2026
Valid until
Sep 16, 2026 (41 days remaining)
Public key
EC 256-bit
Serial
054498081DEA40C512A5A0859E2D5972009F
SHA-256 fingerprint
1A:6A:AF:F5:2B:59:B9:5E:C1:BE:7B:00:E2:B5:21:6B:44:FD:E0:00:12:10:3C:06:05:D6:B2:10:0A:94:28:33
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (40)
*.aboutwikipedia.org, *.americanwikipublishers.com, *.e-wikipedia.org, *.mywikipedia.org, *.softwarewikipedia.com, *.wiikimedia.com, *.wikidata.services, *.wikimania.app, *.wikimania.net, *.wikimaps.net, *.wikimedia.co.za, *.wikimediadns.org, *.wikimobipedia.com, *.wikipeda.com, *.wikipedia-editors.org, *.wikipedia.club, *.wikipedia.de.com, *.wikipediabot.org, *.wikipedianetwork.com, *.wikiquote.am, aboutwikipedia.org, americanwikipublishers.com, e-wikipedia.org, mywikipedia.org, softwarewikipedia.com, wiikimedia.com, wikidata.services, wikimania.app, wikimania.net, wikimaps.net, wikimedia.co.za, wikimediadns.org, wikimobipedia.com, wikipeda.com, wikipedia-editors.org, wikipedia.club, wikipedia.de.com, wikipediabot.org, wikipedianetwork.com, wikiquote.am

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).

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TLS certificate

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