I don't think it's an IP address issue. I think it's to do with a strict firewall.
Check out your firewall, and if you can't see anything blocked for blockland.us then attempt Eatyourham's steps.
It is. Trust me. I'm a expert technician cat.
Cut the red wire.In the case you get a dynamic IP, you can get a IP range that's way too out of the order. At least that's in my case, and this can happen, as it happened to me.
So yeah, just restart your router to get another IP.