Validate domains using website validation methods

You have access and permission to add files to the web server for the domain or IP address being validated

Port 80 is open and publicly accessible on the web server

You can create the /.well-known/pki-validation/ directory on the server

Validate wildcard domains such as *.example.com

You have at least one organization in your CertCentral account. For OV, EV, Private TLS/SSL, and Secure Email certificates, the organization must be submitted for organization validation before you add the domain

Include subdomains in the validation process while validating a higher-level domain. For example, if you want to cover www.example.com, mail.example.com, and one.example.com while validating example.com, use another DCV method.

Validate entire domains and subdomains simultaneously

Avoid common mistakes with HTTP Practical Demonstration to prevent the most common validation failures

Validate domains using DNS validation methods as an alternative when web server access is restricted