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OCSP and CRL access information

CRLs and OCSP use HTTP to retrieve information from the following servers. If you are a network administrator for your organization, make sure all computers in your network that might encounter a digital certificate issued by us can access these CRL and OCSP services.

Do not use the Destination IP information as this is subject to change.

 

Service DNS Hostname(s) Destination IPs Port
OSCP OCSP.ComodoCA.com    Info Changes tcp/80
  OCSP.usertrust.com      

 

 

Service DNS Hostname(s) Destination IPs (subject to change) Port
CRL CRL.ComodoCA.com                                      Info Changes                          tcp/80
  crl.comodoca.com.cdn.cloudflare.net Info Changes                           

      

 

This table is subject to change over time as we expand our services.

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