WhoisXML API Email Format

Technology, Information and InternetCalifornia, United States11-50 Employees

WhoisXML API, based in Covina, California, is a technology company with more than 14 years of experience gathering, analyzing, and correlating domain, IP, and DNS data to support internet security and transparency. Its offerings include data feeds, APIs, research and monitoring tools, and cyber threat intelligence tailored for security teams, enterprises, and investigators. The data scope is extensive, including more than 21 billion historical WHOIS records across 7,596+ TLDs and ccTLDs, over 50 billion domains and subdomains, 10.4 million IP netblocks, 99.5% of IPs in use, and more than 116 billion DNS records collected. Its customer base encompasses commercial security platforms, SOCs, MSSPs, Fortune 1000 companies, government agencies, banks, and other organizations involved in cybercrime investigations and brand protection, and the company has been listed among Inc. 5000 fastest-growing IT companies since 2017. In October 2025 it announced the Domain Info API, a tool that provides an enriched WHOIS record for active or expired domains by leveraging its historical data.

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