DNS

IntraDNS is a server-side component that can be used to perform various DNS lookup operations including Mail Exchange Lookup (MX lookup), reverse IP resolution, Host Name to IP lookup, Name Servers for domain and Canonical Name Record lookup.

The DNS LookUp Component will do a simple DNS look-up and reverse look-up. Features include: Easy look up on any ip-address, Easy reverse look up on any DNS, Only a few lines of code, and Very easy to implement.

ECS DNS is a server-side component that can resolve Host Name or IP. It can be implemented on ASP pages or from any other COM enabled environment.

SkDNS ActiveX Control is a DNS (Domain Name Service) ActiveX control that can be used for network diagnosing, troubleshooting, and monitoring. The Magneto Software DNS (Domain Name Service) ActiveX Control (SkDNS.OCX) allows developers to integrate the DNS protocol message sending capability into their applications. It can be used from any 32-bit Windows development environment, including Visual Basic, Visual C++, and Delphi. SkDNS ActiveX Control is compliant with RFC 1034 and RFC 1035....
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This component can perform DNS lookups, reverse lookups, get local ip and host name, check ip address validity trace and ping another host all from within your ASP pages.

dDNS is an server-side component which will resolve IP addresses or perform reverse-lookups on IP addresses. It can also return the local IP address or host name. dDNS is called from an ASP page or Visual Basic application or any other language capable of making calls to an ActiveX DLL....
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WebResolve is a simple ASP COM object that will resolve a hostname or IP address given a hostname or IP address. If you enter www.webtest2000.com as the hostname, your result will be 216.122.51.96, and vice versa. This COM object will be used for our latest release WebIPBan, a set of scripts are used to ban certain IP or hostname addresses. ...
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DSDns is a COM component that allows you to do forward and reverse DNS lookups, IP address verification and also reveals your current IP address. DSDns is light weight DLL (32K) and can be used in any environment that supports COM automation.

AspDNS can do forward and reverse DNS lookups returning either the IP address or the host name. Two methods are provided: DNSLookup(hostname - string) where the return value is a string with the IP address of the hostname and failure is indicated by an empty string, and ReverseDNSLookup(IPAddress - string) where if the IP address is found in the DNS the return value is the hostname....
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Using this component you can perform DNS lookups, reverse lookups, get local ip and host name, check ip address validity and ping another host all from within your ASP pages.