---
title: "Root and intermediate certificates of CA's"
url: "https://help.internetx.com/en/tls-ssl-smime/root-and-intermediate-certificates-of-cas/"
lang: "en"
section: "TLS/SSL & S/MIME"
---

# Root and intermediate certificates of CA's

For a complete certificate chain (trust chain), the corresponding intermediate and, if applicable, the root certificate of the respective certificate authority (CA for short) must be installed in addition to the actual certificate.

The appropriate intermediate and root certificates of the respective CA for the ordered certificate are displayed in the SSL Manager in the certificate details in the “CA CRT” tab.

They can also be downloaded from the websites of the CAs. Here are the links of the CAs:

-   [Thawte](https://www.thawte.com/roots/)
-   [GeoTrust](https://knowledge.digicert.com/generalinformation/INFO1421.html)
-   [RapidSSL](https://knowledge.digicert.com/generalinformation/INFO1548.html)
-   [DigiCert](https://www.digicert.com/kb/digicert-root-certificates.htm)
-   [Comodo / Sectigo](https://support.sectigo.com/articles/Knowledge/Sectigo-Intermediate-Certificates?retURL=%2Fapex%2FCom_KnowledgeWeb2Casepagesectigo&popup=false)

The root certificate can be downloaded from GlobalSign here:  
[GlobalSign Root Certificates](https://support.globalsign.com/ca-certificates/root-certificates/globalsign-root-certificates)