If a website domain looks like this http://www2.website.com/ is the www2 part domain mean it's an internet 2 site?
I dont think it is related with internet 2. I agree with komirad. When you use a load balancer you usually point www.domain.tld to the loadbalancer's IP and it can take you to any of the servers connected to it. So the only way testing each server separately is doing something like that ... pointing www1 to server 1, www2 to server 2 and so on.