We have a company where people submit leads on our website. The leads submitted contain name, phone number (sometimes two), all in the US.
I am looking for the easiest and quickest solution possible to phone validate the leads. For example, use [url removed, login to view] to call people, have them enter a 4 digit validation code in the website from the phone call (or message), and then let them continue. I'm open to suggestions for the quickest and easiest (and most workable solution).
The website is on IIS, dedicated server, mostly in ASP.