Thanks for the feedback.

I tried pair.com from my browser. It resolved to https://www.pair.com/ and took about five minutes or so to load; however, the layout appeared to have issues and images were missing.

I reloaded several times with varying degrees of success. Each attempt took many minutes (except for one which seemed to have no CSS at all). I finally got what appeared to be a reasonable layout with just one image, https://www.pair.com/img/render-shared.png, missing (although, I was able to download this separately).

I also tried pinging it. This seemed to be fine and I got similar values to those I reported for PM above.