Appreciate the example! It’s when handling a DHCP range and the related CIDR notation that I tend to get especially muddled in this area. It certainly doesn’t help that each router’s interface and terminology tends to vary just enough to add uncertainty.
Regardless, the comments here and more focus on this have helped clear some of this up for me.
Are the chokers somewhat adjustable to fit different size necks? Do you have any dislike or fear of giraffes? If yes and no, you might look into getting some giraffe dolls that are firm enough to basically wear and display the chokers and ease your selection.
You could even slightly decorate the giraffes to help in sorting them, supposing the wearing of chokers wasn’t enough for your tastes.