Definition - What does 411 mean?
The term “411” is an Internet slang used in chat as a way to talk about communicating information. For example: “Did you hear about the new big data platform? What’s the 411 on that?”
Techopedia explains 411
In U.S. telephone exchanges, the number 411 is the extension used for information. Over time, this number developed into a shorthand way to talk about any kind of person-to-person or human communication. Some users such as younger ones might use it, especially in chatting or text messaging, in place of other older colloquialisms like “what’s the scoop?”