You can find your answer at MVC 3 Subdomain Routing
It's about Sub-domain, but with a bit alteration you can use it for your purpose.
Question
I have a question. I have 2 areas in my mvc application. And i want to access this areas from different domain. Example: Areas/Management>>www.management.example.com Areas/Site>>www.example.com
How can i do that? Can you give me starting point?
Solution
You can find your answer at MVC 3 Subdomain Routing
It's about Sub-domain, but with a bit alteration you can use it for your purpose.