*NEW* Download the SSLTools Manager 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 2014-10-21 08:10:21 -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, wikipedia.org, m.wikipedia.org, zero.wikipedia.org, *.m.wikipedia.org, wikibooks.org, m.wikibooks.org, *.wikibooks.org, *.m.wikibooks.org, wikidata.org, m.wikidata.org, *.wikidata.org, *.m.wikidata.org, wikimedia.org, m.wikimedia.org, *.wikimedia.org, *.m.wikimedia.org, wikimediafoundation.org, m.wikimediafoundation.org, *.wikimediafoundation.org, *.m.wikimediafoundation.org, wikinews.org, m.wikinews.org, *.wikinews.org, *.m.wikinews.org, wikiquote.org, m.wikiquote.org, *.wikiquote.org, *.m.wikiquote.org, wikisource.org, m.wikisource.org, *.wikisource.org, *.m.wikisource.org, wikiversity.org, m.wikiversity.org, *.wikiversity.org, *.m.wikiversity.org, wikivoyage.org, m.wikivoyage.org, *.wikivoyage.org, *.m.wikivoyage.org, wiktionary.org, m.wiktionary.org, *.wiktionary.org, *.m.wiktionary.org, mediawiki.org, *.mediawiki.org, m.mediawiki.org, *.m.mediawiki.org, *.zero.wikipedia.org
Is Wildcard SSL? : true
Is UCC SSL/SAN SSL? : true
Has Wildcard domain in SAN field? : true
Issuer Name : DigiCert High Assurance CA-3
Serial Number : 0d:fc:59:1f:25:a8:9a:23:76:59:43:81:40:88:ad:b9
SHA1 Thumbprint : 87:A6:CC:C9:08:A0:0B:4F:B0:66:31:B2:4B:24:3F:39:82:FA:E0:30
Key Length :
Signature Algorithm : sha1WithRSAEncryption
Secure Renegotiation: Supported

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

Correct : Certificate date is valid, valid from Oct 22 2012 and it expires Jan 20 2016 (458 days from today)

Correct : Certificate Name matches hostname www.wikipedia.org


Subject : *.wikipedia.org
Valid from Oct 22 2012 to Jan 20 2016
Issuer Name : DigiCert High Assurance CA-3



Subject : DigiCert High Assurance CA-3
Valid from Apr 2 2008 to Apr 3 2022
Issuer Name : DigiCert High Assurance EV Root CA

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

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