Để kiểm tra chứng chỉ ssl, bạn có thể sử dụng các trang web sau đây:
Comodo
https://sslanalyzer.comodoca.com/
Digicert
http://www.digicert.com/help/
Thawte
https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO9555
Verisign
https://knowledge.verisign.com/support/ssl-certificates-support/index?page=content&id=AR1130
RapidSSL
https://knowledge.rapidssl.com/support/ssl-certificate-support/index?page=content&id=SO9556
GeoTrust
https://knowledge.geotrust.com/support/knowledge-base/index?page=content&id=SO9557