18 years ago: https://www.reddit.com/r/WTF/comments/6hc3w/comment/c03udg0/

> "This code is reserved for future use."

> For when AT&T, Comcast, TimeWarner, et. al. have succeeded in their plan to make the interweb a toll-road. "Oh, you want your packets to go to reddit.com? That will be $0.00015/per."

Redditor had the right idea, just wrong names.