said by bohratom:BTW I read more of that reddit thread regarding blocking that Class B network and it was posted by somebody using TWC from 3 months ago.
Yeah, you're right. The specific IPs listed may be associated with TWC/Brighthouse and there may be more caching servers Google use for specific ISPs. 206.111.0.0/16 may work overall and select few will be redirected to another type of caching server under a completely new IP to throttle your speeds.