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Tip of the Day
Language: VB7
Expertise: Intermediate
Aug 31, 2002

Resolve an internet host address

The System.Net.Dns class exposes a few static methods that let you resolve an internet domain name - such as www.vb2themax.com - into a 4-part numeric IP address, also known as dotted-quad notation.

The Resolve static method takes a string and returns an IPHostEntry object; you can learn the actual IP address by querying its AddressList property, which returns an array of IPAddress objects. In most cases, this array contains only one element. Here's a code snippet that shows how to resolve an address programmatically:


Dim iphe As IPHostEntry = Dns.Resolve("www.vb2themax.com")

Dim addr As IPAddress
For Each addr In iphe.AddressList
    Console.WriteLine(addr)
Next
The IPHostEntry object exposes also the Aliases property, which returns an array of strings that represent all the aliases associated with the host.
Francesco Balena
 
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