Domain Name Service Control  

Resolve domain names into Internet addresses and return information about a remote host, such as the servers that are responsible for accepting mail for the domain.


Control Information

Object Name DnsClientCtl.DnsClient
File Name CSDNSX10.OCX
Version 10.0.1268.1892
ProgID SocketTools.DnsClient.10
ClassID F4DB5045-44D9-433D-9902-6D52A0F5F876
Threading Model Apartment
Help File CST10CTL.CHM
Dependencies None
Standards RFC 1034


The Domain Name Services (DNS) protocol is what applications use to resolve domain names into Internet addresses as well as provide other information about a domain. All of the SocketTools components provide basic domain name resolution functionality, but the Domain Name Services component gives an application direct control over what servers are queried, the amount of time spent waiting for a response and the type of information that is returned.


The SocketTools ActiveX Edition components are self-registering controls compatible with any programming language that supports COM (Component Object Model) and the ActiveX control specification. If you are using Visual Basic 6.0 or Visual C++ 6.0, it is required that you have Service Pack 6 (SP6) installed. It is recommended that you install all updates for your development tools.

This component is supported on Windows XP and later versions of the Windows desktop and server platforms. If you are using Windows XP, you must have Service Pack 3 (SP3) installed as a minimum requirement. It is recommended that you install the current service pack and all critical updates available for your version of the operating system.

This product includes both 32-bit and 64-bit ActiveX controls. Native 64-bit CPU support requires the latest 64-bit version of Windows XP Professional, Windows Server 2003 or later versions of the Windows operating system.


When you distribute an application that uses this control, you can either install the file in the same folder as your application executable or as a shared component in the appropriate system folder. If you install the control in the system folder, it is important that you distribute the correct version for the target platform and it must be registered. If you install the control in the same folder as your executable, it is recommended that you use registration-free activation or COM redirection to ensure that the correct version of the control is loaded by the application.