I'm imagining magmastonealex found it useful for things like working with each of 10.0.0.0/16 without having to manage the digits of those base-256 numbers:

  for (var i = 0; i < 2 ** 16; i++) {
    work("10.0." + i);
  }

as opposed to

  for (var i = 0; i < 2 ** 16; i++) {
    work("10.0." + i / 256 + "." + i % 256);
  }