I use my alternate dns as 188.8.131.52. On 11th april 2019, i found about your dns and instantly switched to it. But i was getting very high ping from Delhi server,India(230ms). I called my isp and they changed the routing to singapore server which is now 76 ms. What a surprise indian server has higher ping than international server just because bad routing.
i forgot to post this link…
I am very surprised your ISP was so quick to help with the routing issue - that sort of thing is virtually unheard of in America!