How to share one space for multiple websites

Nowadays, the virtual host space is getting bigger and bigger. Generally, a website cannot be used up (software or movie downloads are not listed in the List ).
So, how can we make the existing space value for use? Follow these steps:
Step 1: Create the steering control page
Create the default homepage file (usually "index. asp" or "Default. asp") for the website as follows:
<%
Select case request. servervariables ("http_host ")
Case "www.abc1.com" Domain Name 1
Server. Transfer ("index_abc1.asp ")
Case "www.abc2.com" Domain Name 2
Server. Transfer ("index_abc2.asp ")
Case "www.abc3.com" Domain Name 3
Server. Transfer ("index_abc3.asp ")
... Continue to add ......
Case else domain name n
Server. Transfer ("index_abcn.asp ")
End select
%>
Step 2: Create a redirected File
Create "index_abc0.asp"-"index_abcn.asp" as the homepage of each website.
Step 3: Resolve the IP addresses of multiple domain names to the same website Space
For example, resolve all the IP addresses of "www.abc1.com"-"www.abcn.com" to the web space of "www.abc1.com.
Step 4: Set website Web Services
Set the alias for the Web service to "www.abc1.com www.abc2.com www.abc3.com... www.abcn.com" (Note: Separate aliases with a space before)
Now you can use like "http://www.abc1.com ",...... , "Http://www.abcN.com" such top-level Web sites to access the same web space, and get different home page.
Immediately saved the cost of "N-1" space, is not very good!
Finally, it is explained that not all hosts support this method. You need domain names with administrative permissions, Web Service Control Panel with alias settings, and support from virtual host service providers.