WhoKnows has taken a 3-step process to return the most accurate contact info available.
We quickly validate in real-time what the person's current title, company, location are, so even if they've changed jobs last week, we'll have the most current info.
We have aggregated the top contact info providers in the market including FullContact, Clearbit, RocketReach, Nymeria, Lusha, etc, and we ping them all to see who has the best contact info.
Lastly, we do additional verification of any contact info found to validate it's correct. If it's not verifiable, we'll return the contact info, but we won't charge any credits for it.