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Accepted
pjmorse
Asked: 2011-06-21 06:39:20 +0800 CST

What domain names are served by a host?

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For a set of VPSes operated by my company, I'd like to get a list of domain names hosted by each. The list of names has grown in an ad-hoc way for a few years. Is there a simple way to query the Apache and/or Nginx configurations to see what domains the server answers to on port 80?

It is safe to assume (a) that I have sudo on these systems, and (b) they aren't using wildcards, although a solution which acknowledged that a wildcard was in use would be useful too if it also provided a list of explicit domains.

apache-2.2 nginx

2 Answers

  1. Best Answer

    I see two possible ways. First:

    egrep '(ServerName|ServerAlias)' /path/to/httpd/conf/vhosts/* | uniq

    Second:

    dig @8.8.8.8 4.3.2.1.in-addr.arpa PTR

    Here 1.2.3.4 is your server's external IP. Of course, this will do the trick if PTR records were maintained together with A records.

    Or I missed something in your question?..

    • 6 
  2. apache2ctl -S

    Will print out virtual hosts for apache, but I don't know how to get this in nginx.

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