Imports System.Net

    Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            If TextSite.Text.Contains(\"http://\") Then
                Dim iphe As IPHostEntry = Dns.GetHostEntry(TextSite.Text.Replace(\"http://\", String.Empty))
                TextIp.Text = iphe.AddressList(0).ToString()
            Else
                Dim iphe As IPHostEntry = Dns.GetHostEntry(TextSite.Text)
                TextIp.Text = iphe.AddressList(0).ToString()
            End If
        Catch ex As Exception
            MsgBox(ex)
        End Try
    End Sub
End Class