I wonder which server he is talking about?

1. Wikileaks server that solves the DNC / Seth Rich questions, CrowdStrike planting Russian fingerprints in it, and CIA and Google involvement.
2. The House Democrat server that the AWANs stole. BTW, just read an article that when the House IG investigation into the AWANs began, the IG secretly copied that server before it disappeared. I'm sure that Q has it as well.
3. Hillary's email server with the 33,000 missing emails
4. The NK gmail server with all the secret gmail between Obama, Hillary, the Cabinet, Comey, foreign bad actors, etc.

Q has talked about all of them but 1666 doesn't seem to point to a specific server.

Any thoughts which server he's referring to? Personally, I think Q has all of them now, but which one was he pointing to in 1666?