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.
Carry a complete threat intelligence analysis for a given domain or IP address and get access to a report covering 120+ parameters including IP resolutions, website analysis, SSL vulnerabilities, malware detection, domain ownership, mail servers, name servers, and more.
Gather threat intelligence via API calls covering Domain’s Infrastructure analysis, SSL Certificates Chain, SSL Configuration Analysis, Domain Malware Check, Connected Domains, and Domain Reputation Scoring.
Bolster enterprise security with our feeds covering Typosquatting domains, Disposable domains, Phishing URLs, Domain & IP reputation, Malicious URLs, Botnet C&C, and DDoS URLs.
We offer comprehensive services for the integration of our data – from consultations to the precise definition of the basic needs of the business to increase the work efficiency.
Set up and manage public WHOIS servers for your business. Our WHOIS parsing system is a utility that collects extensive information about any given domain by sending series of DNS and WHOIS queries. The report is generated in raw as well as in parsed format.
Regardless of whether you are a startup, a small business or a global one, our team is always ready to help you. Enterprises operating on a scale can also choose special premium support management with high priority 24/7 email and telephone responses and other professional services.
Get customized reports on TLDs covering datasets falling under domain name, WHOIS and DNS category.
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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.
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Domain names
Domain history
Brands
Registrants
Email addresses
IP addresses
DNS History
Threat Intelligence
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Yes, please. Check our Data Policy for Online Publication / Influencer or Data Policy for Print Publications / News Organizations.
Let us know if you are working on an investigation or research where referencing WhoisXML API is not possible and why.
We can help enrich security data strings; investigate domain footprints related to a particular event or trend for news reporting (e.g., COVID-19, BlackLiveMatters, etc.); expose malicious / C&C infrastructure; lookup Internet properties linked to phishing, scams, disinformation, typosquatting, etc.
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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.
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What Our Partners Say
"I used WHOIS API and Website Categorization API. Both tools are simple and straightforward to use. Some API providers have extra bells and whistles that they force you to use, but WhoisXML API is really easy to work with. It’s stable, and I can trust that it’s not going to flatline later."
Mohammad Ismail Daud
UC Davis Student
"With other APIs, there’s a tendency for requests to fail. But I didn’t notice that with Website Categorization API. I noticed that whenever a request was made, the website was always categorized even if it was under an unknown category."
Fergus Smith
University of Glasgow Software
Development MST Student