Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
WhoisXML API Internet Infrastructure
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes with our relevant collection of domain, DNS, IP, and other data sources.
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50 Billion+
Domains and subdomains
28.7 Billion+
WHOIS records
116 Billion+
DNS records
15+
Years of data crawling
10.6 Million+
IP netblocks in total
Drive Product Innovation with Consolidated Data
See how to use domain data to map out any Internet infrastructure:
What You Need
WhoisXML API Internet Infrastructure combines the products below. Contact our sales team to learn more.
| Product | Detail | Time span |
|---|---|---|
| DNS Database Premium | Domain-to-IP mapping and DNS configurations | Historical with daily updates |
| Real-Time & Historic WHOIS Database | Apex domain ownership discovery and monitoring | Historical with real-time, daily, and quarterly updates |
| IP Netblock & Geolocation Database | IP range, ASN ownership and geolocation | Historical with daily updates |
| SSL Certificates Database | SSL user certificates and validity dates | Daily updates |
| Subdomains Database | Subdomains with first and last seen observation timestamps | Historical with daily updates |
Download a Sample
Get a glimpse of our Internet infrastructure intelligence.
Practical Usage
Strengthen attack surface management
Uncover all your interconnected cyber assets to improve attack surface visibility.
Assess third-party and vendor risks
Evaluate security risks by analyzing the infrastructure of critical vendors and third parties.
Enhance brand protection efforts
Monitor the public web for unauthorized or misused brand assets.
Investigate attacker infrastructure
Expose threat actor networks for rapid incident response and attacker takedown.
Rahul Madduluri
Co-Founder and CTO
Doppel
"We did trials with WhoisXML API to make sure the data was truly resulting in successful takedowns. We were able to consistently discover and mitigate real threats as a result of using the products."
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."
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."
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