Who can tell me more reasonable grounds ?

i have 20 IPs on my server. and i want to get many more IPs.

But the server vendors require additional IP address assigned reasons

Who can tell me more reasonable grounds ??

thanks

Running multiple instances of Apache + mail servers, maybe some VPN tunnels for something. Depends on how many IPs you wanna get, you gotta combine stuff together. Nobody is gonna believe you are running 1000 web servers on one box, that's what virtualhosts are for.