How to get server domain name

Question

Can anybody tell me how to get servers domain name in asp.net? (Environment.UserDomainName returns "IIS APPPOOL" string)

Thanks for replays, but mostly they are about DNS name of the server, what I need is the domain name. For example when I login via windows authentication I type domain\user and I need this "domain"

Answer 1

Try the System.Net.Dns class, it has plenty of helpful methods such as GetHostEntry i.e.:

var entry = System.Net.Dns.GetHostEntry("google.com"); // or vice-versa...
var name = System.Net.Dns.GetHostEntry("127.0.0.1"); // localhost ;)

Answer 2

You'll need to extract it from the request object:

HttpContext.Current.Request.Url.Host

Answer 3

There is specific problem to your question, there may be more than one domain name for a specific IP address.

As Tinister stated, you can use

HttpContext.Current.Request.Url.Host

But that will only tell you what the user wrote in the address bar of the browser. If the user added an entry to their host file for your site, and then use that host name, that is what you will see. (I have no idea why they would do so).

If you have more than one domain name for your web site, you can use that to figure out which of the domain names that the user requested.

Answer 4

It looks to me like you are trying to find the user's domain name. Since you are asking for the Environment.UserDomainName. Since your site is likely running with "Allow Anonymous Access" - the user isn't passing their domain information to the server and IIS is giving you the account information it does have, namely the app pool account.