>> 1.1.1.1 is delivered across Cloudflare’s entire network that today spans 180 cities. We publish the geolocation information of the IPs that we query from. That allows any network with less density than we have to properly return DNS-targeted results.

Cloudflare makes an exception to this rule for Archive.{today,is,...} domains. All queries for this domains come from Amazon EC2 in the U.S., not the 180 edges of Cloudflare. This was on blog.archive.today. Why? Who knows. But the decision to break up is made by both parties, not just the archive.