domain name

I have received an inventory of external DNS and domain names for our web servers and need to work through the list. I have found some of the domain names if you just type them into a browser are not an actual website in itself. how can you enumerate a list of actual websites (homepage) based on just the domain name? (DNS and web hosting is really not my area).
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pma111Asked:
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Rakesh KapoorCommented:
Could you please elaborate your requirement. What exactly you are trying to achieve from the domain names?
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pma111Author Commented:
to get a list of actual websites
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pma111Author Commented:
i.e. mydomain.mycompany.com isnt neccesarily a website, what sites/sub-sites are available from the domain mydomain.mycompany.com
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Rakesh KapoorCommented:
Either you can use the below mentioned link to check the sub domains. Or you can go to google and type site:domainname or use site:domainname -www. This will show you all the sub domain and other sites.

https://pentest-tools.com/information-gathering/find-subdomains-of-domain
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Dan McFaddenSystems EngineerCommented:
The way to figure out what DNS entries are running websites is to check the web server and verify what IP addresses are bound to the server.  You can then nslookup the IPs and return the associated hostnames and/or aliases (CNAMES) for the IP.

Your approach is coming from the wrong direction.  Typically, any record in a DNS zone named "www" should point to an IP address which points to a web server/site.

Dan
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pma111Author Commented:
excuse my ignorance Dan, but is this nslookup done within the network hosting the web servers? or via an external app?
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Dan McFaddenSystems EngineerCommented:
A word of warning about scanning and/or pentesting... in most cases, unless you have explicit permissions to scan and/or pentest a remote system, you may be getting yourself into trouble.

Unless you are the owner of the site and the host provider is aware of the pentest, you could be violating your provider's terms of use.  The process of pentesting may inadvertently breach the provider's system which, in today's world, may be seen as trespassing.  Whether or not you do anything with the breached system may be irrelevant.  Just the fact that you tried it, is sometimes enough to be an issue.

Otherwise, if you self host on your own network, then its probably fine.

Dan
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kadadi_vIT AdminCommented:
Hello
Now you need the information of that websites like Registrar , Hosting & DNS.
Browse the who.is in your browser and put the domain / sub-domain name there you will get the complete info for that websites.

Regards,
Vijay Kadadi
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Dan McFaddenSystems EngineerCommented:
nslookup is a built in command line tool of your desktop's OS.  whether Linux or Windows.

There are also online tools to perform these actions:

links:
http://mxtoolbox.com/SuperTool.aspx
http://network-tools.com/nslook/

Dan
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