CriticalDomains in com.apple.networkextension.control.plist link to Google Public servers?

I found my mac automatically tries to connect to the Google public servers 8.8.8.8 and 8.8.4.4 (I haven't set it). I tried to figure out why. Then I found that after I deleted the CriticalDomains in /Library/Preferences/com.apple.networkextension.control.plist, the problem is solved. However, those domains are as follows:

{ CriticalDomains = ( "cheeserolling.apple.com", "woolyjumper.sd.apple.com", "basejumper.apple.com", "basejumper-vip.sd.apple.com", "basejumper.sd.apple.com", "locksmith.apple.com", "gdmf-staging-int.apple.com", "pallas-uat.rno.apple.com", "pr2-pallas-staging-int-prz.apple.com", "livability-api.swe.apple.com" ); }

May I ask what are those domains? I cannot find anything online. Is it possible to link those Apple dns domains to those public Google servers, maybe with some granted access to those Apple servers?