Well, it looks like I successfully made contact with the #W6SRR "DMR of Anarchy" DMR repeater in San Ramon, CA, at least I could see my own traffic on the #brandmeister hose line. But no comebacks at the moment on TG 31666 or 5150.

http://www.dmrofanarchy.org/Repeater-Maps/page9/

It's clear though that #RepeaterBook is less helpful for #DMR information, you really need to know a fair bit about that kind of repeater (networks, talkgroups, time slots, color codes) which that site doesn't capture.