No.
Trademark registration is the most effective way of protecting your website domain name. To avoid a domain name dispute apply for trademark registration before you buy the domain. Registration of a domain name with an Internet registration authority does not give you any protection or right to use the domain name commercially in Canada. The right to use a domain name is determined by trademark law in the countries from which that website is accessible. If there is a registered trademark that is confusingly similar to your domain name, the owner of that trademark can force you to give up your rights to the domain name. It is a good idea to do a search for your domain names in the trademarks database before beginning to use that name commercially. Once you determine that there are no similar names in use, you should immediately file a trademark application to protect your new domain name(s). Now with the opening up of TLDs brand names can register their .brandnames with ICANN. These TLDs will be governed by the trademark laws and ownerships.
WIPO
You may be able to register your internet domain name if your domain name functions as a source identifier. Consumers must perceive it as more than just a website address.
If the company name is a recognized or registered trademark, you may be required to surrender the domain name to them, particularly if it can be shown that you acted in bad faith, e.g. you were squatting on the name to force them to buy it from you.
Most .com domain names that are words have already been taken. To have a short domain name, companies now need a domain name that is not a word. By leaving the e out of tumbler, flicker etc they get a domain name that has not already been reserved. The alternative is to get domain names that are a combination of words but few web users are going to want to type in that many characters. Also you can trademark words like tumblr, you might not be able to trademark tumbler.
Not unless the mark is used "in association with" some goods or services that become known as originating with you. For example, you could obtain trademark rights in "The Drudge Report", but not the name Drudge merely as your surname, even if it happens to be your domain name or username. Even if you make up a fanciful name for yourself or your domain, it has no trademark value unless it is "used in trade" of goods or services. You might argue that people recognize your name as a valuable source of humorous or serious advice, in which case it may start to have some trademark value. If it's simply what you call yourself, then, like a company name, it has no trademark value.
you could lose your ownership on your logo and domain, I think
Not necessarily. Examples: - The original registrant can transfer the full rights to the domain name to a third party. - If the original registrant lets the domain name registration expire, a third party is free to register it (after the waiting period). - The original registrant may lose the rights to the domain name as the result of a trademark dispute.
Neither. "info domain" would be a contraction of "information domain", which would be primarily a descriptive term, not a trademark (unless used in a context outside of computer science). Furthermore, words and phrases cannot be copyrighted.
To register a domain name, you must register the name with ICANN and pay an annual fee to gain ownership of the domain. It is illegal and impossible to have the same domain name as someone else and infringing on the trademark rights of another is illegal.
Neither Copyright nor Patent law protect domain names.