They seem fine for me.
They work for me now too.
I did try to access them over the course of 15 minutes or so, with no luck. At one point I got a message saying some cloud-based availability service kicked in and delivered a message saying the page couldn’t be delivered.
Yeah, the Linode machine had a hardware problem and was undergoing (unscheduled) maintenance between 6 and 8 AM Eastern. They say it’s fine now.