Not Ranked
Banks have been doing this sort of stuff since the Internet came into being. It goes much, much deeper than this. Trust me on that. I spent 14 years in the banking business and know first hand how they work. The book of choice back then was the criss cross book.
There are also addressing services that track who gets mail where. If you get mail at your home you are on that list. If you have an email account and the bill for the Internet service is going to your home, you are on that list.
If they have your email... they got ya! Most people do not know how open your address book is. Honestly it is scary!
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