[iggldiggl]

One problem I've unfortunately run into with alternative DNS providers is that the "default" set of servers returned for content hosted by Akamai apparently has abysmal (not just slightly slower, but positively unusable during peak hours in the evening) peering with my ISP.

In theory EDNS Client Subnet (ECS) is supposed to work around this problem, but a) according to https://www.cdnplanet.com/blog/which-cdns-support-edns-clien... Akamai only supports this with Google and OpenDNS and b) alternative DNS providers might not support ECS anyway, whether explicitly for privacy reasons or otherwise…

Which means I'd basically have to set up a custom DNS resolver in order to special-case queries for Akamai domains…