Our use case involves identifying the registered ASN organizations associated with an IP address visiting a website, and processing and reporting these back to the website owner. We currently use a third party tracker to collect the IP addresses and then a WHOIS service to find the registered owners. My understanding so far is that because I am using a third party tracker the traffic would go through Googles proxy, and I would instead get a Google IP address with almost equivalent geolocation data.

However, I assume all the WHOIS data will now all come out as Google as the owner instead of the actual owner. Seeing as WHOIS data is not the users personal information what assurances can Google provide that this data will still be accessible, and through what mechanism will we be able to obtain it?