Sorry for the false alarm. I found out it was a local issue. I live in a somewhat isolated community fed by a single FO cable. My guess is that some combination of ISP settings and the ads they were trying to serve locked up the display of the site.
It is curious, I had the problem both with WiFi and with the LTE connection on the phone. I'm not positive but it may be that AT&T is using the Comcast cable for their local internet connection which is why they behaved the same. We have had issues with this in the past when someone would run their car into the pole holding up the cable and knock out internet for the whole town.