Okay, let's pretend you have a big box of crayons with lots of different colors. Each crayon has its own name and number, so you can easily find the one you want.
Now, imagine the internet is like a giant coloring book, and every device that connects to it (like your computer or phone) uses a special number called an IP address to find its way around.
The people who manage all these IP addresses are called the Number Resource Organization (NRO). Think of them like the grown-ups who help you sort and organize your crayons so you don't lose the one you need.
The NRO makes sure that there are enough IP addresses for everyone who wants to connect to the internet, and that each address is unique so devices don't get confused. They work with different groups around the world to decide how to share the IP addresses fairly, like making sure big companies don't hog all the numbers and leave none for smaller businesses.
Overall, the NRO helps keep the internet working smoothly and makes sure everyone can color (or connect) without any problems.