Does every domain have unique IPs?

Question

I want to know whether every domain adress has a unique IP adress? Furthermore, where these IP\'s are located? and how does this redirection system works? When we try to access

Answer 1

Not every domain address has unique IP. There may be more than one domain addresses on same IP. Every domain have DNS and these DNS pointing to server who redirect different domains (with virtual hosts) for exampple.