#1 WHOIS History Database with extensive historical domain coverage

Get access to a comprehensive and well-parsed historical WHOIS database resulting from 15+ years of data aggregation and partnerships.

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#1 WHOIS History Database with extensive historical domain coverage

1.2 Billion+Domains tracked

25.5 Billion+WHOIS records

7,596+TLDs and ccTLDs tracked

52,000+Satisfied customers

We provide historical WHOIS data that is:

Exhaustive

We have over 25.5 billion historical WHOIS records obtained from tracking more than 1.2 billion domains across more than 7,596 top-level domains (TLDs). More historical data is added to our domain history database every day as we continue our data crawling activities.
Reliable

Our data gathering methods have been perfected after more than 15 years of data crawling. We provide accurate and reliable WHOIS history intelligence to thousands of happy customers.
Well-parsed

We want to make it easy for customers to use our domain ownership history data. As such, our historical WHOIS database is already clean, parsed, and structured, making it readily integrable into existing systems.

What is a WHOIS history database?

A WHOIS history database, also known as a domain history database, is a repository of WHOIS records used to track historical domain registration changes and ownership details prior to WHOIS record redaction.

Practical uses

Bolster cybersecurity platforms

Protect your organization from domains that are associated with known cybercriminals. Integrate a domain history database into your security systems to find associations with malicious actors.

Include the examination of historical WHOIS records in your third-party risk assessment and monitoring strategies. Integrating WHOIS History Database into systems makes risk monitoring and management more robust and comprehensive.

Enrich cybersecurity platforms with historical domain ownership data. A domain history database can help protect clients from suspicious registrants, known threat actors, and trademark infringers. Even when their current WHOIS records have been redacted or privacy-protected, the database enables your platforms to flag domains that have historical ties to them.

Use WHOIS History to strengthen digital risk protection and contextualize IoCs—such as hostnames, IP addresses, and email addresses—found on deep web forums and pastebins and to execute enrichment and pivot queries.

Enhance domain name investing and registrar activities

Make sure to check the past ownership records of any domain name you are interested in. Historical associations can affect domains’ sellability in the future and could result in either a loss. Build your domain portfolio with the help of a historical WHOIS database.
Build a high-quality domain portfolio by learning from top industry players. Study the past and present domain portfolios of successful domain name investors. A domain history database allows you to get insights into trends in the domaining world.
Immediately act on domain ownership movements by monitoring changes in WHOIS records. Registrars can make better business decisions regarding domain name transfers and acquisitions by looking into historical WHOIS records.

Enrich cybercrime investigations

Privacy protection and WHOIS record redaction are among the first roadblocks that cybercrime investigators and law enforcers face. They can find out more about erring domains by looking into their historical WHOIS footprints.
Cybercriminals have identifiable information that law enforcers and cybercrime investigators can use as starting points for investigations. With billions of historical WHOIS records, WHOIS History Database can provide investigators with more clues and additional data points. Domains associated with threat actors are revealed, along with other WHOIS record details that shed light on ongoing investigations.
Create an attacker profile by digging up the domain ownership of a known threat actor. The past and present domain portfolios of cybercriminals can tell a story and reveal a penchant for specific domain name types. Recognizing a pattern among the domains you dig up from WHOIS History Database can help solve a specific cybercrime.

WHOIS History Database is configurable to your needs and specific use cases

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Elvis Yeboah-Duako,

PhD student

University of Massachusetts, Amherst

“For my research on domain analysis, I needed historical context to improve the efficiency and accuracy of my findings. The WHOIS History API proved to be remarkably helpful. Particularly, the depth and quality of the domain registration history were indispensable for tracing patterns and identifying instances in my study where ownership changes were and could be used as attack vectors to compromise the privacy and security of unsuspecting users. It's an excellent tool with detailed API documentation.”

Vinny Adjibi

PhD Student

Georgia Institute of Technology

“Whois XML API products represent an invaluable resource for security researchers, seamlessly integrating within complex pipelines with ease.”

Harold Buchman

Designer / Developer

BuchmanDesign.com

“Your history lookup is a life saver. I’m a web designer with a client who lost track of one of their important domain names. Using your web-based WHOIS history search, I was able to prove they do indeed own the domain and assist them with their registrar account recovery process. This was sort of a one-off for me, but if I face a similar situation in the future, I’ll definitely come back to make further use of your amazing tools and resources.”

Kim Kok

Vice President

Core4ce

“We want to provide all Cyberscape users the ability to integrate relevant data for their cyber threat investigations. WhoisXML API provides unique data that will be helpful to the cyber threat investigation community, allowing analysts to shorten the cycle of understanding and mitigating threats.”

Johnny So

CS PhD Candidate

Stony Brook University

“WhoisXML API offers a comprehensive suite that can serve as a one-stop shop. Furthermore, the team is very supportive of the academic research community, and overall responsive to customer inquiries!”

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.”

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.”

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.”