[elishah]

> "time nslookup"

Or as a slightly more thorough approach, you can use something like namebench or dnsbench:

https://code.google.com/archive/p/namebench

https://github.com/askmediagroup/dnsbench

[bayindirh]

Yeah, while it's not as thorough as these tools, the method is at least reproducible and sane, and with ~10 or so samples, you get an interval with a nice confidence.

Another through method will be hyperfine[0], yet I wanted to provide a method which requires no installation and can be done in a whim, without jumps and hoops, with the tools already at hand.

[0]: https://github.com/sharkdp/hyperfine