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The reason we (Cloudflare) don't share ECS info is to protect the privacy of the querying user by not exposing their full IP address to the authoritative resolv
by zackbloom 8y ago
The reason we (Cloudflare) don't share ECS info is to protect the privacy of the querying user by not exposing their full IP address to the authoritative resolver. We are exploring ways we can pass a subset of this information such that the user can be roughly geolocated without exposing their identity.
Cloudflare runs an Anycast network, we do geographic load balancing by terminating the user's connection at our closest point of presence (as determined by BGP) and then routing their traffic to the origin of the customer's choice from there. As we're not doing geo load balancing using DNS, I'm not sure what the information provided by 1.1.1.1 would do for us.