I would suggest speaking to your netops perhaps. They definitely are in CPT. Im getting sub 1ms latency to them... As the guy who helped with the Cape Town install, I can vouch that they have been there for a long time.
The point of quad nine is to make browsing a) safe and b) anonymous. They filter out a large chunk of info that can be used to link a query to an ip.
As to who runs it, it is a company called PCH, and they also host a wod of TLDs. ver nice bunch of people
Some people I know implemented it on...