When buying a GeoTrust, RapidSSL, or COMODO certificate, SSL Certificates for www.example.com will also secure example.com. Using any other sub-domains will only secure that exact domain.
When purchasing a VeriSign (Symantic) certificate for www.example.com or any other sub-domain combination, that purchase will only cover that single subdomain and not the root domain (example.com).
You must specify the exact sub-domain when generating your CSR. Once a certificate has been issued, the domain cannot be changed
There are three types of Validation used depending on the type of SSL Certificate that you purchased: Domain Validation, Organization Validation, and Extended Validation. The level and process for validation are listed below:
- DV – Domain validation: 1 – 2 Business Days
- OV – Organization validation: 1 – 2 Business Days
- EV – Extended Validation: 1 to 10 Business Days