CmdID

CmdID / Commands / nslookup set

nslookup set domain

Changes the default Domain Name System (DNS) domain name to the specified name. Windows commands reference

On Windows

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Windows

from the Windows commands reference, CC BY 4.0
set domain=<domainname>
<domainname>Specifies a new name for the default DNS domain name. The default value is the name of the host.
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/helpDisplays help at the command prompt.