Getting the reverse DNS 1

[ericnet]

I was told that with the reverse DNS I will get the domain name of the client, most of times the domain name of a service provider. But when I make the reverse DNS of my IP address I get the name of my server (my ‘workstation’) instead of the domain name of my Internet service provider. What’ s the explanation of this?

Thanks

 

[jbenson001]

Are you running the app locally, from your PC on and connecting to IIS on your own PC? If so, you will get your workstation name. You would have to connect to your app through IE lets say, then you should see the ISP.

Jim

 

[ericnet]

Are you running the app locally, from your PC on and connecting to IIS on your own PC?

Yes, that’s my case

Getting this information in this way:

Dim HostInfo As IPHostEntry = Dns.GetHostByAddress(Request.UserHostAddress)
HostInfo = HostInfo.HostName

Can have slow performance because the time needed by code to get this data? Or retrieve this information with this code is very fast for the application?

 

[ericnet]

It doesn't matter, thank you to solve my first question