1.1.1.1 is widely known to be a dumping ground of random traffic, as well as a common internal address for captive portals and whatnot. The entire rollout of 1.

1.1.1.1 is widely known to be a dumping ground of random traffic, as well as a common internal address for captive portals and whatnot. The entire rollout of 1.1.1.1 has been characterized by legacy bugs and misconfigurations of network hardware preventing its proper use. Regardless of what the standards say about 1.1.1.1, it was a poor choice if Cloudflare values widespread adoption.