Generally they don't and it is not necessary since there is no link to that directory for them tho follow and the .com on the end indicates a different site.
I want to prevent Google to index that adress, I want it instead to just index the new site´s domain name and all that content.
How can I fix this in a robots.txt file?
Thanks in advance
i don't get the problem... but you try this meta <meta name="googlebots" content="noindex, nofollow"> You can use this special HTML <META> tag to tell the robots not to index the content of a page. i hope i give the right answer from your problem.