rollnbone says:

"i dont know too much"

That was apparent several posts ago.

idcwebs.com/Understanding_Web_Extensions.htm

"To further understand domain names please read the article below.

An extension, or Top Level Domain (TLD), is the highest level category of Internet names. The domain name space is divided into several TLDs. The extensions .com, .net and .org are called "generic" domains because they are not affiliated with any country. "

It's not "US by default" -- next time you want to call someone ignorant, you might want to make sure you aren't calling the kettle black.