Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.
Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.
Access our web-based solution to dig into and monitor all domain events of interest.
Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.
Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.
Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.
Enjoy priority data access with our premium API services topped with extra perks including dedicated team support, enterprise-grade infrastructure, and SLAs for full scalability and high performance.
Start checking historical WHOIS records via API calls in your developed systems and commercial applications.
Get started500 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.
Use WHOIS History API to do in-depth research into a domain’s past and avoid potential liabilities. You can also start your investigations using other WHOIS History products.
“WhoisXML API is amazing for checking out the historic registration information of a domain, pivoting to locate the alternate registrations with the same details and also my cyber investigations. The data proved very useful when investigating pig butchering scams and domains that host child abuse material.”
“Very useful for investigations, we can go back in history and see when domains were registered and who owned them at a certain time.”
“WhoisXML API builds out data sets that help users correlate attack infrastructure with related IP and WHOIS information.”
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 moreWe 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 moreGet free access to our API and Domain Research Suite. 500 free credits. No credit card required.
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