Is it possible to list all third-level domains of the given second-level domain?

Question

For example, suppose I want to list all third-level domains of google.com. That list should look like

 translate.google.com
 plus.google.com

etc. Is it possible to get that list for an arbitrary second-level domain?

Answer 1

In practice, no.

It may be possible for a specific domain, if the owner of the domain felt like it. Find the name servers for the domain in question (dig ns google.com), then ask one of them for a zone transfer (dig axfr google.com @ns1.google.com) and see if you get a list of names or a short error message.