Start checking historical WHOIS records via API calls in your developed systems and commercial applications.Get started
500 free API credits. No credit card required.
Track all changes in domain ownership and registration for the past 10 years from our daily-updated database that contains billions of current and historical WHOIS records.
There is no need to spend days programming to get the job done. Whois History API integration is made easier with code libraries and JSON & XML output formats.
Use WHOIS History API to look up the hidden identity of past domain owners and identify attacker’s historical footprints — before privacy records.
Find out who might be committing online fraud or attacking your network with WHOIS History API.
Get in-depth insights into your customer base. Use WHOIS History API to conduct statistical and market share analyses to improve marketing strategies, zoom in on the right markets, and identify untapped opportunities.
Our 14.3+ billion historical WHOIS records are normalized, consistent, adequately parsed, and can be downloaded in CSV and MySQL files for prompt integration without the need for API calls.Order database
Our APIs are available in an enhanced version that offers better performance with a dedicated load balancer and a premium endpoint to enable faster throttling for large-scale API deployments.Learn more
We offer more than historical WHOIS data. Check our Enterprise API Packages for access to other comprehensive DNS and IP intelligence sources to strengthen your data integration, analysis, and correlation activities.Learn more