Ah, thanks for the clarification. I guess I just saw a key larger than an IPv6 address and assumed it was something I couldn't share openly. It does seem weird that it's that big then. 50+ characters that can be A-Z0-9 feels like an insane amount of entropy for something that's essentially a proxy for a 12 digit number. It's longer than Windows product keys or the SSH public key I use for Github!

Additionally, I don't necessarily want a key sitting out there that will let any random person who finds it a dynamic way to look up my current IP address. It's not the worst thing in the world, but it's definitely not something I'd publish publicly.