zlacker

Yeah but if the site standardized on EDNS to get this information, it's rather difficult to do something different just for Cloudflare.

>>wkat42+(OP)
edns-client-subnet only provides an IP address; the receiving CDN still needs to geolocate it.

So the main difference is that Cloudflare's servers need to be present in the IP geolocation database. Given their prevalence, they're probably in most of them already.