Knowledgebase: SSL
Which is Root? Which is Intermediate?

 

  SHA-2 SHA-1 (Legacy)
Product Certification Path (Hierarchy) Certification Path (Hierarchy)
 EV
  [ inc. EV SGC & Multi-Domain ]

  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Extended Validation Secure Server CA
  • End-Entity/Domain Certificate

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  • UserTrust / AddTrust External Root
  • COMODO Certification Authority
  • COMODO Extended Validation Secure Server CA
  • End-Entity/Domain Certificate

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  EnterpriseSSL/InstantSSL/PremiumSSL
  [ inc. Unified Communications (UCC) & IntranetSSL]

  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Organization Validation Secure Server CA
  • End-Entity/Domain Certificate

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  • UserTrust / AddTrust External Root
  • COMODO High-Assurance Secure Server CA
  • End-Entity/Domain Certificate

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  ComodoSSL
  [ inc. ComodoSSL Wildcard & ComodoSSL UCC ]

  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Domain Validation Secure Server CA
  • End-Entity/Domain Certificate

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  • UserTrust / AddTrust External Root
  • COMODO SSL CA
  • End-Entity/Domain Certificate

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  EssentialSSL
  [ inc. EssentialSSL Wildcard / FreeSSL ]

  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Domain Validation Secure Server CA
  • End-Entity/Domain Certificate

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  • UserTrust / AddTrust External Root
  • UTN - DATACorp SGC
  • COMODO Certification Authority
  • EssentialSSL CA
  • End-Entity/Domain Certificate

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  PositiveSSL
  [ inc. PositiveSSL Wildcard & Multi-Domain]

  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Domain Validation Secure Server CA
  • End-Entity/Domain Certificate

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  • UserTrust / AddTrust External Root
  • PositiveSSL CA 2
  • End-Entity/Domain Certificate

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  Code Signing
  • UserTrust / AddTrust External Root
  • COMODO RSA Certification Authority
  • COMODO RSA Code Signing CA
  • Code Signing Certificate

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  • UserTrust / AddTrust External Root
  • UTN-USERFirst-Object
  • COMODO Code Signing CA 2
  • Code Signing Certificate

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  SHA-2 SHA-1 (Legacy)
Product Certification Path (Hierarchy) Certification Path (Hierarchy)
  InCommon SSL
  • UserTrust / AddTrust External Root
  • USERTrust RSA Certification Authority
  • InCommon RSA Server CA
  • End-Entity/Domain Certificate Certificate

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  • UserTrust / AddTrust External Root
  • InCommon Server CA
  • End-Entity/Domain Certificate Certificate

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  InCommon Code Signing
  • UserTrust / AddTrust External Root
  • USERTrust RSA Certification Authority
  • InCommon RSA Code Signing CA
  • Code Signing Certificate

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  • UserTrust / AddTrust External Root
  • InCommon Code Signing CA
  • Code Signing Certificate

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Additional Notes:

  • IIS 4.x and up can use a .cer file.
      This file contains: Root, Intermediates, and domain certificate; all rolled into one file (PKCS#7).

  • IIS 6.x and up will accept a .crt (end-entity/domain certificate) file, but Root and Intermediate(s) will need to be installed manually.

  • Apache makes use of a SSLCertificateChainFile in which we give it a file extension of .ca-bundle file.
      This file contains the Intermediate(s) and sometimes Root certificates in a single file.

  • Some Comodo Partners have their own Comodo certificate hierarchies. If you are unsure of your certificate hierarchy, please contact support by submitting a support ticket
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