How the fuck did this happen and why?
Hiro took an image of a spaceship and uploaded it.
eh, someone used your current IP in 2014 and got themselves b&. since it's for ban evastion they just got a new IP and probably continued shitposting, leaving the ban to expire.
now your ISP has allocated that IP to you (dynamic IPs are quite common) - either just a routine change or you unplugged your router causing it to be given a new IP.
and since ever since that ban you're the first person to access 4chan on that IP you now see the old ban. since it's already over - no reason for concern.
>>27000
You're on 3g, so you got the IP address of the last guy to be in your physical location.
4chan's not very bright about that.
If it keeps happening, maybe buy a 4chan pass, which is used to identify you instead of your IP.