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I know that the Windows hosts file maps host names to IP addresses. But there is no mapping for localhost. Instead it has a comment that says this:

# localhost name resolution is handled within DNS itself.
#   127.0.0.1       localhost

I don't understand this. Where is this "DNS" that handles this resolution? Is it a program somewhere in Windows OS? Is it outside of Windows? Does it have a config file? How is this being done?

Liga
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1 Answers1

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DNS here refers to the Windows operating system DNS resolver, which is part of the network stack.

Tero Kilkanen
  • 38,887