Tools to scan for subdomain

["Sifvion" <sif () dabox org>]

Is there a tool to scan for subdomain?
For example host www.abc.com has several sub domains like xyz.abc.com,
efg.abc.com and so on, but I only know abc.com, so is there any tool that is
able to tell me there are subdomains for this abc.com and list them out and
making it more difficult is that those subdmains are in differebt set of IP?
For example :

root host: abc.com IP: 1.2.3.4
subdomain: xyz.abc.com IP: 2.3.4.5

You see here the IP is not under the same IP range of root host. So is it
possbile to find xyz.abc.com?

Thanks


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