Get the latest unredacted WHOIS data for any domain

Kevin Branzetti

CEO

National Child Protection Task Force

“To every single person who showed up—who came in early, stayed late, worked shoulder to shoulder with people they’ve never met, and treated every case like it mattered most—THANK YOU. You gave these children more than just safety. You gave them hope, love, and compassion. And you reminded each other that this fight doesn’t have to be lonely.”

Michael Bazzell

Owner

IntelTechniques

“The WhoisXML History API has been a game changer for our online investigations, trainings, and books. We have uncovered the true owners behind numerous malicious domains, even though they currently possess "private" Whois registration.”

Flavio Critelli

Distinguished Professor of Digital Forensics

University of Perugia

“Whois XML is one of the most important tools we use for domain intelligence in the Bachelor's Degree program in Investigation and Security Sciences at the University of Perugia. In particular, we appreciate the reverse research from IP to Domain and Whois with query filters. The tool is comprehensive, providing detailed information such as phone numbers, names, and other details from Whois records. While many Whois records are now covered by privacy regulations, WhoisXML API provides access to all historical WHOIS records.”

Dennis Suermann

Student

University of Paderborn, System Security department

“The website intelligence is easy to set up and returns everything we need. One reason for this is the documentation of the API, which is well-written and very detailed.”

Marzieh Bitaab

PhD Student, Computer Science

Arizona State University

“Thanks to well-structured and clear API documentation provided by WhoisXML API, we were able to integrate the solution seamlessly into our system with minimal technical challenges.”

Michael Roberts

Founder & Private Investigator

Rexxfield

“WhoisXML was the game changer for us. It has revolutionized our ability to disrupt cybercrime in process and at scale by quickly identifying all of the vendors providing material support for scammers using sophisticated website templates that look legitimate. By quickly identifying the vendors unknowingly supporting the criminals, we can provide them with public interest justification to burn down the criminal infrastructure.”

“After thorough testing, we were thrilled to find that Chronicle DNS Database consistently identified 10 times more 'active' subdomains compared to other options in the market.”

“The consistent and structured data provided by WhoisXML API made it possible to group and identify who is behind suspected fraudulent websites, being able to search by phone number, address or e-mail address used in the domain registration.”

Yannick Delsahut

CEO

Goldstark

“I appreciate your products that are useful for checking domain expiration dates.”

Karlis Blumentals

CEO

Mozello

“Mozello offers built-in domain registration services to our customers, and we needed an easy-to-implement domain availability checking solution that covers all possible domain names, including exotic ones. WhoisXML API provides right what we need at a reasonable cost and with zero maintenance, plus it is very easy to implement.”

Christine Bejerasco

Senior Analyst

F-Secure Corporation

“WhoisXML API is a responsive and reliable provider of domain intelligence. Whenever there are issues, they are quick to respond and resolve them. Working with them is smooth and straightforward.”

Rich Sutton

VP of Engineering

Proofpoint

“WhoisXML API’s domain intelligence allows us to quickly integrate WHOIS lookups into our security heuristics and algorithms without having to worry about hosting services, staging and merging data, and the complicated task of normalization.”

Kieran Kennedy

Head

Snowflake Marketplace

“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.”

Oleg Danilov

Director of Marketing Services - Sales Excellence & Data Management

Herold

“WhoisXML API data helps us make informed and automated decisions, filtering invalid email addresses much faster.”

James Knight

Director

Broads Tours

“We needed a simple way of verifying the integrity of user-entered email addresses, and discovered WhoisXML API - it is great value and was really easy to integrate with our systems. Excellent customer service when required, too.”

Larry Cameron

President and Founder

Paradigm Intelligence Ltd

“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.”

“DRS is a Great product, easy to use and everything I need in one place.”

Jacob Waltz

CEO/Founder

Intraframe

“Very useful for investigations, we can go back in history and see when domains were registered and who owned them at a certain time.”

David Pearson

CEO/Founder

Bayse Intelligence

“WhoisXML API builds out data sets that help users correlate attack infrastructure with related IP and WHOIS information.”