We provide a variety of WHOIS data consumption models, including APIs, lookup tools, and direct access to our 16.7B+ historical WHOIS records via database downloads.Get started
500 free API requests. No credit card required.
Despite the capital letters in “WHOIS”, it is not an acronym. Yet as the name suggests, a WHOIS record tells you all about a domain name’s registrant. Each WHOIS record gives pertinent details about the domain, including its age, registration status (creation, last update, and expiration dates), registrar, and owner. It allows users to obtain a domain owner’s contact details for reasons that include cyber investigation, market research, domain purchase, competitor monitoring, and more.
We parse and normalize all of our WHOIS data so it can be used as is or quickly integrated into a variety of internal systems.
We provide query results in convenient formats across all of our products. API outputs are available in XML and JSON, database downloads in CSV and MySQL, and lookup reports are hosted using a custom URL and are shareable.
Near real-time data gathering means instantaneous access to accurate information, enabling better decision-making. Our WHOIS information is updated daily.
Need domain data points such as registrant name, organization, email address, location, registrar information, creation/last update/expiration dates, availability, age, and more? WHOIS Lookup can help with web-hosted shareable reports.
A single API call is all you need to obtain WHOIS information for your various business requirements. Get the first 500 WHOIS API calls free of charge if you sign up for an account.
Our bulk WHOIS processing tools provide WHOIS records for an entire list of domains/IP addresses made via a single RESTful API or graphical user interface (GUI) query. Upload your existing data and download the results in comma-separated values (CSV) format.
We provide complete and relevant domain WHOIS data that can be customized and easily integrated into systems for all your business needs. We do our best to widen the scope of our database and boost its accuracy to offer data that is as well-structured as possible.
Enable your digital forensics and incident response (DFIR) and other cybersecurity teams to collate domain ownership information to enhance their solutions and find ties, if any, to ongoing malicious campaigns.
Allow payment processors to look out for customer information discrepancies in WHOIS records to potentially catch fraudsters. Protect online shop owners from risks related to identity theft.
Carefully screen domains based on their WHOIS records to keep your potential attack surface to a minimum. Ward off domains that don’t belong to legitimate companies from your network as early as the discovery stage.
Make sure you are talking only to the authorized representatives of any third party you’re planning to do business with by scrutinizing their WHOIS record details.
Simplify investigations by obtaining domain ownership information to spot signs of potential cybersquatting. Arm your brand protection agents with WHOIS data so they can pinpoint potential instances of trademark infringement.
Be the first to obtain a potentially high-demand domain name by keeping track of all registration changes. Domains that changed hands could clue you into what your competitors are up to as well.
“Keeping track of new domain registration activity is essential in today's digital economy. We look forward to continuing our collaboration with WhoisXML API to help customer leverage critical domain insights in a secure cloud environment that aligns with their data privacy and governance requirements.”
“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.”