Redirection subdomain to root domain

[sandiegos]

Hello, I want to get this effect in htaccess:

http://example.com -> redirect to http://www.example.com

http://blebleble.example.com -> redirect to http://www.example.com (redirect random subdomain to root domain)

http://www.example.com -> there is no redirection

http://subdomain.example.com -> there is no redirection (a predetermined sub-domain)

Please help me :)

[lucy24]

Well, start by reading the first page or two of posts in this thread. Your question is definitely in the Top Ten, so you will find much advice and guidance. When you think you've got it figured out, come back with your code.

Bonus points for using example.com up front without needing to be told ;)