Get a phone number, then run a reverse directory check through intelius.com or a similar service. Also,
Dog Breeders, Puppies for Sale, Dog Breeds Information allows you to host a questionnaire on their server. You can require people to fill it out, or no deal.
Every successful placement I've had came off a completed questionnaire as the first contact. Cold calls where the first words out of the caller's mouth are "How much are your puppies?" are a waste of my time.
By way of illustrating my point, allow me to share one of my favorite "puppy buyer" stories

:
I answered the phone. Fella asked if I had any puppies for sale and how much were they? (I did, but again, cold calls that start with a request for a price are halfway to the trashcan right off the bat.) "Hi, I'm Dave. And your name is?"
"Uh, (Half second pause) Donald."
Right. Do you spell "Uh" with one "H" or two? Strike one.
Talk to him a bit. "Uh...Donald" tells me that he has trained German Shepherds for protection work and for police departments for ten years, then asks where he can get a bite suit. Pal...you should already HAVE one. You haven't been taking bites from full grown GSD's for ten years on your bare arms and legs, have you? Strike two.
Blah, blah, blah...quote him a price that's $1000 higher than I was charging, and tell him to fill out my questionnaire so I can get more of an idea what he's looking for in a puppy, etc. Have a nice day.
Get the "received call" number off my phone, run it through intelius.com. It comes back as a MetroPCS month-to-month account, the name on the account is "Mike," (not "uh, Donald," no last name) associated with
four addresses in one of the worst neighborhoods in the United States (a place where I won't go without a handgun, two reloads for same, and a folding knife. In daylight only.).
Swing and a miss! STRIKE THREE! You're OUTTA THERE! :rofl: