If I attempt to go to Facebook (any page on the domain), whether by clicking on the bookmark or typing it in the address bar, the address bar shows “facebook.com” for about a quarter of a second and then disappears, as if I never typed or clicked the link in the first place. This bug occurs in both Chrome and Firefox and it only occurs with Facebook. What’s going on here? Malware? DNS issue? Something else?
Try to use 66.220.149.11, see what happens
My first thought when it’s a single popular site that’s blocked in multiple browsers is definitely malware.