Resolved after 2 days 8 hours, on August 27, 2016.
The helpful folks at statuspage.io added a certificate for status.ntppool.org today so that domain will now work in browsers with working HSTS.
Update timeline
- identified Aug 27, 2016, 08:00 PM UTC
The ntppool.org domain requires TLS for all sub-domains, but the status.ntppool.org site doesn't have a certificate yet so it won't load in some browsers. The alternate domain ntppool.statuspage.io works (as you might have found out if you're reading this).
- resolved Aug 30, 2016, 04:20 AM UTC
The helpful folks at statuspage.io added a certificate for status.ntppool.org today so that domain will now work in browsers with working HSTS.
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