Most of those seem OK for me now, and DD agrees. This seems to have been a temporary blip for all of them, possibly some kind of service switchover/fallback "n

Most of those seem OK for me now, and DD agrees. This seems to have been a temporary blip for all of them, possibly some kind of service switchover/fallback "not entirely unrelated" to the Meta outage? Edit: actually a more attractive theory, given the very short timelines and near simultaneity of all those failures, is that downdetector itself had a failure, possibly a Meta-dependence, that they noticed and corrected quickly.