Comodo's extensive rootkey portfolio is trusted by over 99.9% of all browsers and mobile devices

SSL Browser Recognition

99.9% of Internet users inherently trust Comodo Certificates - equivalent or better than VeriSign, GeoTrust or Godaddy. Scroll down to see the full list of browsers and mobile operating systems that support our roots.

Key Size

All Comodo root and intermediate certificates are signed with 2048 keys, guaranteeing your website enjoys the highest level of SSL protection now and well into the future.

Comodo CA Rootkeys

  • SecureCertificateServices
  • TrustedCertificateServices
  • AddTrustPublicCARoot
  • ComodoCertificationAuthority
  • AAACertificateServices
  • AddTrustQualifiedCARoot
  • UTN-DATACorpSGC
  • AddTrustClass1CARoot
  • AddTrustExternalCARoot
  • UTN-USERFirst-Hardware
  • Windows Root Update
  • UTN-USERFirst-ClientAuthentication and Email

SSL Certificate Compatible Web Browsers

Web Browsers:

  • Microsoft Internet Explorer 6.0 +
  • Mozilla Firefox 1.0 +
  • Mozilla 0.6 +
  • Google Chrome
  • Konqueror (KDE)
  • Netscape 4.77 +
  • Opera 6.1 +
  • Apple Safari 1.2 +
  • Camino 1.0 +
  • AOL 5 +

Server Platforms

  • Apache
  • BEA Weblogic
  • C2Net Stronghold
  • cPanel / Web Host Manager
  • Ensim Control Panel
  • Hsphere
  • IBM HTTP Server
  • iPlanet Server / Sun One
  • Java Web Server (Javasoft / Sun)
  • Lotus Domino
  • Microsoft IIS
  • Microsoft ISA
  • Microsoft Live Communication Server
  • Microsoft SQL Server 2005
  • Netscape Enterprise Server
  • Novell ConsoleOne + Novel Webserver
  • OpenLDAP
  • Oracle HTTP Server
  • Plesk
  • Tomcat
  • Webmin
  • WebSTAR
  • Zeus Web Server
  • All other SSL-Capable Server Platforms

Application Suites:

  • Microsoft Authenticode
  • Visual Basic for Applications (VBA)
  • Adobe AIR
  • Sun Java SE 1.4.2 +
  • Mozilla Suite 1.0 +
  • Sea Monkey

Mobile Devices / PDAs / Micro Browsers / Games Consoles

  • Android 1.5 +
  • iOS 1.0 +
  • Windows Phone 7 +
  • Microsoft Windows Mobile 5/6
  • Blackberry 4.3.0 +
  • Microsoft Windows CE 4.0
  • Microsoft IE Pocket PC 2003
  • Microsoft IE Smartphone 2003
  • Palm OS 5.0 +
  • Netfront Browser 3.0 +
  • KDDI Openwave 6.2.0.12 +
  • Brew
  • Opera Mini 3.0 +
  • Opera Mobile 6.0 +
  • NTT / DoCoMo
  • Sony Playstation Portable
  • Sony Playstation 3
  • Nintendo Wii

Extended Validation Browsers:

  • Microsoft Internet Explorer 7 + (Vista)
  • Microsoft Internet Explorer 7 + (Windows XP)
  • Microsoft Edge
  • Opera 9.5 +
  • Firefox 3 +
  • Apple Safari 3.2 +
  • Google Chrome 1 +

Email Clients (S/MIME):

  • Microsoft Outlook 99 +
  • Microsoft Entourage (OS/X)
  • Mozilla Thunderbird 1.0 +
  • Microsoft Outlook Express 5 +
  • Qualcomm Eudora 6.2 +
  • Lotus Notes (6 +)
  • Mail.app (Mac OS X)
  • Microsoft / Windows Mail 1.0 + (Vista)
  • The Bat 1 +

Document Security Platforms:

  • Microsoft Office(Word, Excel, Powerpoint, Access,InfoPath)
  • Open Office Suite