DNS was actually the first alert we received, but alas was not the cause.
It's all working for me, but everything's super super slow. Usually opening pages in private mode/not-logged-in is fast, but not this time.
It almost seems like DDoS on CDN or something like that.
super super slow too, probably DDoS
Initially, it seemed like a DoS to us too, but it was not. This was confirmed by upstream provider metrics. No major traffic spikes. It was a combination of non-malicious things. More info later, some of us need sleep.