DNS resources

Programming tools

HexDns component
An ActiveX/COM component that can retrieve any DNS record. You can use this component with almost any Windows development tool, including ASP, VB, .NET, C++, Cold Fusion, Delphi, and more.

HexLookup component
An ActiveX/COM component that does simple forward and reverse lookups.

Sample code
Demonstrates how to check domain name availability, create an NsLookup utility, get MX records, and retrieve LOC records.

Regular expressions
Handy expressions for validating domain names client-side in web browsers.

Online utilities

We have several free utilities online:

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