What can Google see as domain registrar?

[arbitrary]

Google recently became a domain registrar and I would like your thoughts on what Google can see when someone registers a domain.

Lets try this using an example.

I create an account with a domain registrar (not Google of course). I use "Address A" when creating my account with my registrar. I buy a domain with my registrar and use "Address B" for the address for that domain. I pay for the domain with a credit card which has "Address C" attached to the credit card.

I believe that Google has access only to "Address B", the address attached to the domain. I don' think they have access to "Address A", the address I used for the account with my registrar. I am almost positive they would not have "Address C", the address used for the credit card I bought the domain with. (I am certain, they would NOT have my credit card number ;-)

Lets not bring into this why "Address A" may be different from "Address B" and "Address C". This is an example used to find out what Google has access to.

Thanks.