*NEW* Download the SSL Manager v1.3 for Windows application

SSL Checker and Diagnostics Tool

Is this site running ssl and does it have the ssl certificate installed correctly?

Results for: www.wikipedia.org

generated at 2016-04-28 23:18:18 -0500 (click 'lookup' for realtime info)

>> click here for dns information about www.wikipedia.org

>> click here to be reminded when ssl expires for www.wikipedia.org

>> click here to visit https://www.wikipedia.org

Use the SSL Checker Tool to find out details about a site's ssl certificate. Webmasters can use this tool to assist in troubleshooting ssl installation.

Simply enter a url in the text box and click the 'lookup' button to get detailed, realtime information about a site's ssl certificate.

website, domain, or url


Valid Domain Name IP Resolves To 208.80.154.224

SSL Certificate

Common Name : *.wikipedia.org
Subject Alternative Names : *.wikipedia.org, mediawiki.org, wikibooks.org, wikidata.org, wikimedia.org, wikimediafoundation.org, wikinews.org, wikiquote.org, wikisource.org, wikiversity.org, wikivoyage.org, wiktionary.org, w.wiki, *.mediawiki.org, *.wikibooks.org, *.wikidata.org, *.wikimedia.org, *.wikimediafoundation.org, *.wikinews.org, *.wikiquote.org, *.wikisource.org, *.wikiversity.org, *.wikivoyage.org, *.wiktionary.org, *.m.mediawiki.org, *.m.wikipedia.org, *.m.wikibooks.org, *.m.wikidata.org, *.m.wikimedia.org, *.m.wikimediafoundation.org, *.m.wikinews.org, *.m.wikiquote.org, *.m.wikisource.org, *.m.wikiversity.org, *.m.wikivoyage.org, *.m.wiktionary.org, *.zero.wikipedia.org, wikipedia.org
Is Wildcard SSL? : true
Is UCC SSL/SAN SSL? : true
Has Wildcard domain in SAN field? : true
Issuer Name : GlobalSign Organization Validation CA - SHA256 - G2
Serial Number : 11:21:a2:25:ba:04:02:d7:91:85:48:54:c8:ba:60:68:6a:9b
SHA1 Thumbprint : 87:F5:BA:BB:D8:97:C5:79:B6:6A:F5:2F:D8:63:8B:99:BD:1C:E8:26
Key Length :
Signature Algorithm :
Secure Renegotiation: Supported

This certificate does not use a vulnerable Debian key (this is good)

Correct : Certificate date is valid, valid from Dec 10 2015 and it expires Dec 10 2016 (226 days from today)

Correct : Certificate Name matches hostname www.wikipedia.org


Subject : *.wikipedia.org
Valid from Dec 10 2015 to Dec 10 2016
Issuer Name : GlobalSign Organization Validation CA - SHA256 - G2



Subject : GlobalSign Organization Validation CA - SHA256 - G2
Valid from Feb 20 2014 to Feb 20 2024
Issuer Name : GlobalSign Root CA

SSL Certificate is correctly installed
Congratulations! This certificate is correctly installed.

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