how to make custom domains

Question

How to make custom domains like these

http://fb.me http://youtu.be

Answer 1

You buy them from registrars based in Montenegro and Belgium respectively.

Answer 2

Domain name "youtu.be" is already owned by Google. Domain name "fb.me" belongs to facebook.com

You can check if domain name is already registered for example here: http://www.networksolutions.com/whois/index.jsp

Answer 3

Well, just register the domain name you want (something short probably).

If you want a URL shortener (as the http://youtu.be example) you will need to point this domain to a web application that will convert the short form to the original URL. You can download and install a small webapp (e.g. shortenr) that does, need need to write one yourself.