Update: Thursday, 04 October 2018 18:37 UTC
All availability tests in East Japan, Brazil South and South UK regions would have been impacted. Customers may have also noticed some missing web test results from other all GSM regions.
Mitigation is in progress region by region as we notice the issues in them. As of now, the issue is completely resolved for East Japan, Brazil South and South UK regions and customers should no longer experience errors in these regions, however customers may still notice some missing webtest results other regions, but mostly all of the other regions should be back as well. We are continuing to monitor other GSM regions to completely mitigate this issue for our customers.