About CertDB



Any web project that stores even the minimal amount of user data must ensure its privacy and integrity in transmission, thus the need for SSL/TLS certificates. Examining the data hidden in certificates provides a lot of insight about business activity in a particular geography or even collaboration between 2 different companies. For example, the registration of a new unknown domain in Palo Alto hints at a new start-up; switching from the «Wildcard» Easy to manage and flexible, a Subject Alternative Names (SANs) secured Wildcard is a top choice for organizations managing multiple sites hosted across numerous subdomains. You can issue copies of your certificate on as many servers as you want, each of which is assigned its own private key. Add, change, or delete a SAN at any point during the lifecycle of the certificate. A certificate configured for *.example.com, will secure www.example.com, as well as mail.example.com, blog.example.com, and others. The asterisk is used to serve as placeholder for all possible subdomains. certificate to "Let's Encrypt" Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. It is a service provided by the Internet Security Research Group (ISRG). ISRG give free digital certificates they need in order to enable HTTPS (SSL/TLS) for websites. tells us about the organization's budget constraints; issuing a certificate in an organization with domains of another organization speaks about collaboration between companies, or even at an acquisition of one company by another.

We are proud to introduce CertDB, an Internet-wide search engine for research and analysis in the field of SSL/TLS certificates. Now you can quickly and conveniently analyze both historical data and get new information in real time, as we research the web 24/7 for new certificates.

How it works?

And how do i use it?

CertDB continuously find out every reachable web server on the Internet with SSL/TLS certificates. And all of this information is available to query and analyze in real time. CertDB uses all publicly accessible entry points for most common ports of the entire IPv4 range. For example, analysis can be narrowed down to recently registered domains, soon to expire certificates, geographic location, company names and many more.

Use cases

Examples on how to use CertDB are below.

Certificates reached in

Certificates subscribing domain taobao.com

Certificates from Intel at Washington

Certificates which would expire in a week from Australia

Certificates issued in last 10 days for Microsoft Corporation

Certificates for D-LINK from United States

Certificates for Microsoft Corporation from subnet