Dns.EndGetHostAddresses Method

Note: This method is new in the .NET Framework version 2.0.

Ends an asynchronous request for DNS information.

Namespace: System.Net
Assembly: System (in system.dll)

public static IPAddress[] EndGetHostAddresses (
	IAsyncResult asyncResult
public static IPAddress[] EndGetHostAddresses (
	IAsyncResult asyncResult
public static function EndGetHostAddresses (
	asyncResult : IAsyncResult
) : IPAddress[]



An IAsyncResult instance returned by a call to the BeginGetHostAddresses method.

Return Value

An array of type IPAddress that holds the IP addresses for the host specified by the hostNameOrAddress parameter of BeginGetHostAddresses.

The BeginGetHostAddresses method queries a DNS server for the IP addresses associated with a host name. If hostNameOrAddress is an IP address, this address is returned without querying the DNS server.

When an empty string is passed as the host name, this method returns the IPv4 addresses of the local host for all operating systems except Windows Server 2003; for Windows Server 2003, both IPv4 and IPv6 addresses for the local host are returned.


This member emits trace information when you enable network tracing in your application. For more information, see Network Tracing.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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