FullContact
A privately held enterprise software company focused on contact management, identity resolution, and customer-data enrichment.
Last updated August 22, 2026
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Overview
FullContact is a privately held technology company whose products have centered on organizing, connecting, and enriching contact and customer information. Founded in 2010 by Bart Lorang, Travis Todd, and Dan Lynn, the company initially developed cloud-based tools for contact management and later expanded toward data services for businesses, developers, and brands. Its technology has been associated with identity resolution: linking fragmented records and identifiers so that organizations can obtain a more coherent view of a person, account, or customer across systems and channels. The company entered the startup ecosystem through the Techstars Boulder accelerator in 2011. Over time, FullContact broadened its capabilities through a mixture of internally developed software and acquisitions. These transactions included Cobook, a Latvian startup acquired in 2014; Profoundis Labs and Conspire, acquired in 2016; Mattermark, acquired in 2017; and Contacts+, a mobile contact-management application acquired in February 2018. The acquisitions gave FullContact access to complementary contact-management products, professional and company data, relationship intelligence, and information-enrichment capabilities. Contacts+ was later sold to Benchmark Email in 2021. FullContact has served several types of customers. Its business-facing software and APIs have been positioned for organizations that need to cleanse, standardize, match, and enrich records, while its developer-oriented tools have supported the integration of contact and identity information into other applications. For brands and advertising-related users, the company's stated focus on identity resolution has involved associating mobile advertising identifiers with personal data in order to make otherwise disconnected datasets more useful for analysis and activation. These applications place FullContact within the broader enterprise data, customer intelligence, and marketing-technology markets. Bart Lorang led the company for much of its early development. In August 2020, he appointed Chris Harrison as his successor as chief executive officer. The company subsequently continued as a private technology business. In the fourth quarter of 2024, Ziff Davis purchased all of FullContact's assets. The transaction represents a significant change in the ownership context of the business and its intellectual property, although the available reference material does not specify the detailed transaction structure, consideration, or the precise operating status of every FullContact product after the asset purchase. FullContact's overall positioning has therefore evolved from consumer-facing and developer-oriented contact organization toward enterprise data infrastructure. Its principal value proposition is the transformation of incomplete, duplicated, or disconnected contact records into more usable identity and relationship data. The company has maintained operations associated with Denver, Colorado, and Kochi, India, reflecting a U.S.-based business with an international operating footprint.
History
FullContact was established in 2010 by Bart Lorang, Travis Todd, and Dan Lynn as a technology company focused on contact information and cloud software. Its early identity was tied to the problem of keeping address-book data organized and useful across devices and applications. Rather than treating contacts as static lists, the company developed services intended to consolidate records and attach additional information to them. The business gained early startup exposure through participation in the Techstars Boulder accelerator in 2011. From there, FullContact developed into a privately held software and data company serving businesses, developers, and brands. Its scope expanded beyond basic contact management toward APIs, data enrichment, and identity resolution. Identity resolution became a central description of the company's technology: connecting records or identifiers that refer to the same person or organization, including relationships between mobile advertising identifiers and personal data. This orientation placed FullContact at the intersection of enterprise software, customer data, marketing technology, and advertising infrastructure. Acquisitions were an important part of the company's development. In 2014, FullContact acquired Cobook, a Latvian startup. In 2016, it acquired India-based Profoundis Labs and Conspire. These transactions added capabilities related to contact information, professional relationships, and data intelligence. In 2017, FullContact purchased Mattermark, an aggregator of information about startups and other companies. The Mattermark transaction broadened the company's access to business and company data. In February 2018, FullContact acquired Contacts+, a mobile contact-management application, extending the company's portfolio in a product area close to its original focus. The company also operated internationally, with headquarters in Denver, Colorado, and a location in Kochi, India. Its products were directed at different customer groups: businesses seeking better customer records, developers integrating data services through APIs, and brands attempting to understand and activate fragmented identity information. This mixture of software and data services enabled FullContact to position itself as infrastructure for customer intelligence rather than solely as an address-book application. Leadership changed in 2020. In August of that year, co-founder and longtime chief executive Bart Lorang appointed Chris Harrison as his successor. The company later divested Contacts+, which was sold to Benchmark Email in 2021. That sale indicated a narrower emphasis on the company's business and data-oriented activities, although the available material does not describe the full product strategy surrounding the divestiture. FullContact's ownership context changed again in the fourth quarter of 2024, when Ziff Davis purchased all of its assets. The available reference does not state the purchase price, whether the corporate entity continued independently, or how every product and employee arrangement was handled afterward. Accordingly, FullContact is best described as a private technology brand and software business with a history of contact management, data enrichment, and identity-resolution products, whose assets were acquired by Ziff Davis in 2024.
- 2024
Ziff Davis asset acquisition
[1]Ziff Davis purchased all of FullContact's assets in the fourth quarter.
- 2021
Contacts+ divestiture
[1]Contacts+ was sold to Benchmark Email.
- 2020
CEO succession
[1]Chris Harrison succeeded Bart Lorang as chief executive officer.
- 2018
Contacts+ acquisition
[1]FullContact acquired the Contacts+ mobile contact-management application.
- 2017
Mattermark acquisition
[1]FullContact purchased Mattermark, a business-data aggregator.
- 2016
Profoundis Labs and Conspire acquisitions
[1]FullContact acquired Profoundis Labs and Conspire.
- 2014
Cobook acquisition
[1]FullContact acquired Latvian startup Cobook.
- 2011
Participation in Techstars Boulder
[1]FullContact went through the Techstars Boulder accelerator.
- 2010
FullContact is founded
[1]Bart Lorang, Travis Todd, and Dan Lynn founded FullContact.
Products and positioning
Enterprise-oriented contact intelligence and data infrastructure that helps businesses, developers, and brands connect, resolve, and enrich fragmented identity records.
Data enrichment and developer API
FullContact API
FullContact's API-oriented offering supported the integration of contact and identity information into business and developer applications. Its role within the broader product portfolio was to make contact records more useful by organizing, matching, and enriching data. The available reference material does not specify the complete endpoint catalog, pricing, or current availability.
Identity and customer-data infrastructure
Identity Resolution
Identity Resolution was a central area of FullContact's business focus. The technology was described as linking identifiers, including mobile advertising IDs, with personal data and other records so that organizations could recognize related information as belonging to the same individual or entity. It served use cases in customer intelligence, marketing, advertising, and data integration.
Mobile contact management
Contacts+
Contacts+ was a mobile contact-management application acquired by FullContact in February 2018. It complemented the company's broader contact-organization strategy by providing a consumer- and mobile-oriented product for managing address-book information. FullContact later sold Contacts+ to Benchmark Email in 2021.
Business and company intelligence
Mattermark data
Mattermark aggregated information about startups and other companies. FullContact purchased Mattermark in 2017, adding business-data and company-intelligence capabilities to its portfolio. The available material does not establish the precise product names, successor services, or current disposition of Mattermark assets.
Brand decisions
2024
Sell FullContact assets to Ziff DavisM&ABackground
FullContact's ownership and operating context changed after an asset transaction in the fourth quarter of 2024.
Action taken
Ziff Davis purchased all of FullContact's assets.
Aftermath
The transaction transferred the company's assets to Ziff Davis. The available reference does not disclose the purchase price or detailed post-transaction operating arrangements.
2021
Sell Contacts+ to Benchmark EmailM&ABackground
FullContact separated its mobile contact-management application from the rest of its business.
Action taken
Contacts+ was sold to Benchmark Email.
Aftermath
FullContact retained a stronger emphasis on business data, APIs, and identity-related services, although the available material does not describe the complete strategic outcome.
2020
Change chief executiveStrategyBackground
After leading FullContact through its early growth and acquisition period, co-founder Bart Lorang appointed a successor.
Action taken
Chris Harrison became chief executive officer, succeeding Lorang.
Aftermath
The change placed Harrison in charge of the private company as it continued its data and identity-resolution activities.
2018
Acquire Contacts+M&ABackground
FullContact continued developing its contact-management footprint with a mobile application acquisition.
Action taken
FullContact acquired Contacts+ in February 2018.
Aftermath
Contacts+ remained in the portfolio until its sale to Benchmark Email in 2021.
2017
Purchase MattermarkM&ABackground
FullContact pursued additional company and startup data through Mattermark.
Action taken
FullContact purchased Mattermark.
Aftermath
Mattermark's aggregated business information became part of the company's expanded data-oriented portfolio.
2016
Acquire Profoundis Labs and ConspireM&ABackground
FullContact expanded its data and relationship-intelligence portfolio through two acquisitions.
Action taken
The company acquired India-based Profoundis Labs and startup Conspire.
Aftermath
The transactions broadened the capabilities and geographic footprint associated with FullContact's data business.
2014
Acquire CobookM&ABackground
FullContact sought to expand its contact-management capabilities through the acquisition of Latvian startup Cobook.
Action taken
FullContact acquired Cobook.
Aftermath
The acquisition became part of FullContact's broader expansion from contact organization into data and identity services.
Sources2 sources
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