Can I register domain with fake name or address?

[eddielkk]

As satyakam said you can hide your details but it will cost extra what i know but if you dont want to do that then you can go for fake details no problem in it.

That's what I wanted. That means instead of paying extra money to hide real details, we can simply put fake details which cost nothing at all. But I wonder if it's against the rule of domain registration or something.

When you register, you do not need to put any real name and address at all. Even on the WHOIS database for a domain, those admistrativie and technical contact can also changes to other name which didn't match with your registration contact too.