Why is 127.0.0.1 the localhost IP?
It's a question that has encapsulated all of geekdom for, well, as long as geekdom has existed. Why does 127.0.0.1 mean the localhost IP? Why 127? What does the 0.0.1 mean? Who decided these number in this order would be known as "home". Well, our friends over at HowToGeek have the answer.
Source: https://www.howtogeek.com/126304/why-is-the-localhost-ip-127.0.0.1/