InstantSSL - General Frequently Asked Questions

Can I apply for SSL Certificates for sub-domains?

Yes, but it can be simpler and more cost effective to open an account as an Enterprise Public Key Infrastructure Manager (EPKI Manager). For more information please contact sales@comodo.com.
It may also be more cost effective to use a Wildcard certificate which protects all sub-domains below the primary named domain. For more information please contact sales@comodo.com