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by LogicX 2723 days ago
depends whether or not they're passing EDNS0 Client Subnet data to the authoritative DNS parties, and whether those parties are listening for it / trusting it.

We embed ECS data in our requests at DNSFilter to the authoritative upstreams, and we have a large global anycast network, so even if they're not accepting it, the answer is coming from a server 'nearby' the originating dns request, so CDN requests shouldn't be affected much.