New domain registrations - how to find?

I know when I register a new domain I get in the mail letters for services. I would like to find a list or some site where I can search new domains and offer them services.

I'm sure there is a way but I don't know how. Do you know of a tool and are willing to share? Thanks.

TeslaFan (the inventor, not the car).

As far as I know, some companies sell these lists, I think if you type of Google something like "buy new domain registration list" you will have a lot of them. (I wrote it and found several but I don't want to post links to them, it would seem a little spammy)