Trademarking a Domain Name? Sure, why not?
A common misconception is that a website that just advertises your goods or services can be a trademark. It can’t. The domain has to be a unique source indicator all on its own, meaning it has to tell people what your goods or services are on its own. Basically, if your domain name is just an Internet address where your customers can find you, it can’t be registered. It just tells people where to find you. It is merely incidental to your primary business purpose.