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Editorial Team
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Asked: 2026-05-12T23:40:33+00:00

nslookup.exe www.google.com 127.0.0.1 This command can resolve using DNS server 127.0.0.1, it’s impossible to

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nslookup.exe http://www.google.com 127.0.0.1

This command can resolve using DNS server 127.0.0.1, it’s impossible to implement a full stack DNS protocol resolver in a 75.0 KB nslookup.exe, so it must have been using dnsapi.dll.

So which dll export C function can provide similar gethostbyname() with a specified DNS server in dnsapi.dll?

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1 Answer

  1. Editorial Team

    You can use the pExtra parameter to the DNSQuery function.

    Apparently the MSDN documentation is incomplete, since it says this parameter must be null.

    See http://support.microsoft.com/kb/831226 for an example of its use.

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