Dallas came back online at 08:40 UTC. CosmicGuard has been using Cloudflare Magic Transit recently to help absorb the large attacks that DDoS mitigation providers are being hit with nowadays, 20Tb/s+.
Unfortunately Cloudflare suffered a connectivity issue to CosmicGuard in Dallas, which resulted in traffic being blackholed, essentially dropped. CosmicGuard is currently investigating with Cloudflare why this happened, to hopefully prevent a repeat. We apologise for the inconvenience caused.