About FullContact
An identity graph that stitches the same person across channels.
FullContact was founded in 2010 in Denver, Colorado by Bart Lorang, Travis Todd and Dan Lynn, and went through Techstars Boulder in 2011. The product line moved over the years from a contact-management app to an identity-resolution platform that returns a persistent PersonID for an email, phone, hashed identifier or anonymous website visit, plus a person and company graph for enrichment. Bart Lorang handed the CEO seat to Chris Harrison in August 2020. Ziff Davis acquired all of FullContact's assets in the fourth quarter of 2024 and operates the brand under J2 Martech Corp., a Ziff Davis company.
The product surface today sits in three places. Resolve returns a persistent PersonID and links incoming identifiers to it, with a Bring-Your-Own-ID option so the PersonID joins cleanly to your CRM key. Enrich appends person and company attributes from a library that the company markets at around 900 fields, packaged in Insight Bundles for segmentation, professional, demographic, financial and risk use. Acumen identifies high-intent visitors on your website and returns the matching person and company without a third-party cookie. The same data feeds an MCP server FullContact published for AI agents that need real-time customer profiles.
The reason to land FullContact in a warehouse is that the value of an identity graph is the lift it produces on your own customer base, not the row count on the vendor's homepage. Match rate against your customer list, attribute decay between refreshes, ML-feature uplift on a churn or lead-score model and the build-versus-buy line on a homegrown stitching service all live in the join between the FullContact feed, the CRM, the product database and billing. Inside the API console those numbers stay invisible; in a warehouse they become the number you renew on.