I have the Tecnicolor modem(renting it from TWC) 200 speed Im in LA, haven’t had any issues with DNS but sometimes my internet does go out. We also have our phone service with TWC(Bundle package of TV/internet/Phone) I would contact TWC about this, and they can credit you if there is a problem with the router
None up here in Maine.
Dont use their DNS service.
Here... find a faster/better DNS service.
https://code.google.com/archive/p/namebench/downloads
Once you know which DNS servers to use either set them up or ask me how.
https://www.grc.com/dns/benchmark.htm
Easier benchmark.
Either that or just add 8.8.8.8 as a nameserver. Problems with DNS solved.
I have thier Arris modem/router, a month ago I was having intermittant internet connection losses. It went on for a few weeks with outages lasting 30 sec to a few minutes. It cleared up with out any service calls. I am in SE Wisconsin.
Try Verizon.
Looks like your under a nuclear attack......
Downdetector
http://downdetector.com/status/time-warner-cable/map/
Are you logged in?
Look out for the black helicopters.