How do I find out the IP Address of a domain with subfolder?

[strange1]

Let's say I have a domainname e.g. http://www.blablabla.com

I can easily route or ping that domain and get the IP entry for it but how can I find out if it uses different IP Addresses?

I mean let's say it is a hosting company and each member gets a subfolder below that domain, e.g.

http://www.blablabla.com/hosting1/

and that account is using another IP Address on the machine, how can find out that exact IP, where does that folder /hosting1 point to?

is it even possible?

[mpirvul]

If it is an internal redirect whereas the server at blahblah.com is doing it's own request to another server meaning you never KNOW where that real server is, then no, that server can be anywhere in the world without the IP being revealed to the end user. You might check the servers response headers too, sometimes there is something like a PROXY or PEER type header that reveals the REAL servers IP. Cut and paste this (changing the blahblah.com/somedir/ part into the real information), into a command/shell prompt.

<!-- CUT SNIPPET FROM NEXT LINE -->
telnet blahblah.com 80
GET /somedir/ HTTP/1.0
Host: blahblah.com

<!-- CUT SNIPPET FROM PREVIOUS LINE -->
[Be sure that you have 2 CRLF's (carriage return, line breaks) after the Host: part]

However, the directory may represent a real directory on the server at blahblah.com, in which case, you already know the IP. Just nslookup blahblah.com.