Dns Class

Provides simple domain name resolution functionality.

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

public ref class Dns abstract sealed
public final class Dns
public final class Dns
Not applicable.

The Dns class is a static class that retrieves information about a specific host from the Internet Domain Name System (DNS).

The host information from the DNS query is returned in an instance of the IPHostEntry class. If the specified host has more than one entry in the DNS database, IPHostEntry contains multiple IP addresses and aliases.

The following example queries the DNS database for information on the host www.contoso.com.

IPHostEntry^ hostInfo = Dns::GetHostByName( "www.contoso.com" );

IPHostEntry hostInfo = Dns.GetHostByName("www.contoso.com");

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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