Test Your Certificates Globally with our All-New SSL Checker
May 14, 2014 | Dmitriy Akulov
It can be used to check your SSL installation and much more.
In addition to validity, expiration and other information you expect, we’ve also included other features such as validating the certificate chain against a trust store, the full list of domains a certificate supports and, of course, a Heartbleed vulnerability check.
But we think the most important addition is being able to test your certificate from multiple locations. This is very useful to see if it will work with CDNs and web sites that utilize GeoCast for load balancing.
Other SSL checkers work from only one geographic location. This can be extremely limiting in many real world cases. Our checker takes the guesswork out of ensuring the custom certificate you installed in a CDN will work as well in Europe as it does in the USA. To make things easier, SSL Checker provides the IP address of the server that responds to the test. Feel free to test your clusters and high availability systems with this tool.
For our backend, we use two tools: openssl for most of the tests and as as a fallback for other tests, and sslyze to simplify our code.
MaxCDN will continue to add new features for your testing needs.
Super Fun Time
Top 25 Alexa US Domains SSL Analysis:
|Mon Jul 21 2014||Google Internet Authority G2||SAN*|
|Mon Apr 13 2015||DigiCert Inc.||SAN|
|YouTube||Mon Jul 21 2014||Google Internet Authority G2||SAN|
|Yahoo||Thu Apr 09 2015||VeriSign, Inc.||SAN|
|Amazon||Sat Feb 28 2015||VeriSign, Inc.||SAN|
|Wikipedia||Wed Jan 20 2016||DigiCert Inc.||SAN|
|Thu Aug 14 2014||Thawte, Inc.||Standard|
|Ebay||Tue Jun 07 2016||VeriSign, Inc.||SAN|
|Mon May 09 2016||VeriSign, Inc.||EV** SAN|
|Craigslist||Tue Oct 20 2015||Network Solutions L.L.C.||Wildcard|
|Bing||Sat Apr 16 2016||MSIT Machine Auth||Wildcard|
|Thu Apr 13 2017||DigiCert Inc||EV SAN|
|Blogspot||Tue Jul 22 2014||Google Internet Authority G2||SAN|
|Go (Login)||Tue Aug 04 2015||Entrust, Inc.||Standard|
|Live (Login)||Fri Oct 24 2014||VeriSign, Inc.||EV SAN|
|CNN (No SSL)||n/a||n/a||n/a|
|Mon Feb 08 2016||GeoTrust, Inc.||Standard|
|Tumblr||Sat Apr 09 2016||GeoTrust Inc.||SAN|
|Paypal||Mon Jan 12 2015||VeriSign, Inc.||Standard|
|Imgur||Wed Aug 31 2016||DigiCert Inc||EV SAN|
|WordPress||Sun Apr 17 2016||GoDaddy.com, Inc.||Standard|
|Thu Apr 09 2015||GANDI SAS||SAN|
|HuffPost (No SSL)||n/a||n/a||n/a|
|ESPN||Sun May 24 2015||Entrust, Inc.||Standard|
|Netflix||Sun May 25 2014||GeoTrust Inc.||Standard|
Charts from the Top 25 Alexa US Domains SSL Analysis: