How do I list the subdomains of a domain?

[djlaidler]

Hi Mozers,

I am trying to find what subdomains are currently active on a particular domain. Is there a way to get a list of this information?

The only way I could think of doing it is to run a google search on;

site:example.com -site:www.example.com

The only issues with this approach is that a majority of the indexed pages exist on the non-www domain and I still have thousands of pages in the results (mainly from the non-www).

Is there another way to do it in Google? OR is there a server admin online tool that will tell me this information?

Cheers,

Dan

[StevenHowe]

Hi Dan,

The way to know for sure is to get a copy of the Start of Authority (SOA) file for the domain.

Can you ask your host or server admin for this?

[djlaidler]

Hi Steven,

Thanks for the quick response, what I should have pointed out was that I am currently proposing a Strategy for this site and do not have access to it.

Any further thoughts?

Dan

[StevenHowe]

Yeah, sorry, bit of a basic response! Well, if the server admin took any sort of standard security class then you won't be able to see the file.

You could try this method if it hasn't been secured though:

http://andywolf.com/list-all-dns-records-from-a-public-domain-with-nslookup/

[MattAntonino]

1. Go to Wolfram Alpha

2. Enter the domain without any subdomain (ie. wordpress.com)

3. In the 3rd result box, top right, push "subdomains."

4. When it opens, push "more" (top right of the box)

You'll get something like this:

http://bit.ly/XaJ7o3

[djlaidler]

Thanks again,

Running this on my Mac, it allowed me to run NSLookup but when it came to listing the subdomains it advised me that 'ls' was not a valid command.

Dan

[djlaidler]

Sadly, although this site is big (over 1000 pages), wolfram alpha doesn't offer the tab that suggests subdomain...

I checked it on a number of sites (seomoz, harvard etc ) and it worked well.

Any other ideas?

Dan

[MattAntonino]

Really??  That's strange - if you PM me the domain, I can do a bit more digging.