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.
Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.
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.
Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.
Learn MoreIf you are explicitly mentioning our data in your article, then you should hyperlink it to our data source from where you have referenced it. If the data cannot be linked to the source page then, you should link it to the WhoisXmlApi.com homepage.
If you are using our data only for researching your article, you should mention the same in Resources / Credits or in the article itself with a hyperlink to whoisxmlapi.com.
If you are sharing your articles / posts on social media primarily you should tag (mention) WHOISXMLAPI:
For publishing lists of more than 25 domain names connected to any specific data, you need to inform our team at [email protected] and get a prior approval before sharing the data.
Mentioning our social media to your followers is always welcome, though not mandatory.
If you are mentioning our data or have used it for research purposes, you should mention whoisxmlapi.com as your data source.
For publishing lists of more than 25 domain names connected to any specific data, you need to inform our team at [email protected] and get a prior approval before sharing the data.
WhoisXML API works with security researchers, scholars, and journalists to raise cyber awareness, investigate threats and vulnerabilities, establish context around threat actors and malicious infrastructure, and more.
Do you have an exciting research project or investigation and require access to WHOIS, IP, or DNS data? Let’s talk.
Domain names
Domain history
Brands
Registrants
Email addresses
IP addresses
DNS History
Threat Intelligence
WhoisXML API data played a part in an in-depth investigation by Lighthouse Reports that revealed a massive cybersurveillance outfit operating in Europe.
Discover how ScamAdviser worked with WhoisXML API and other data partners to meticulously research and curate the 2022 Global State of Scams Report.
Learn how WhoisXML API data aided EU DisinfoLab’s efforts to make sense of and expose a 15-year-old disinformation operation comprising fake media outlets targeting different countries.
Learn how the National Child Protection Task Force (NCPTF) teamed up with WhoisXML API and dozens of OSINT technology partners and law enforcement investigators to work on missing person cases.
Learn how academic researchers partnered with WhoisXML API and used our WHOIS database to lay the groundwork for more effective vulnerability notifications.
Learn how WhoisXML API and a Bloomberg columnist raised awareness of coronavirus-related domain names possibly used in suspicious or malicious online activities.
We are here to listen. For a quick response, please select your request type. By submitting a request, you agree to our Terms of Service and Privacy Policy.