Our mission | WhoisXML API
Products APIs Data Feeds Web Tools Domain Research & Monitoring Enterprise Packages
WHOIS / WHOIS History
WHOIS / WHOIS History

Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.

DNS / DNS History
DNS / DNS History

Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.

IP Geolocation / IP Netblocks
IP Geolocation / IP Netblocks

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.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Access our web-based solution to dig into and monitor all domain events of interest.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

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.

Research
Monitoring
White-Label
WhoisXML API Predictive Threat Intelligence
Predictive Threat Intelligence

Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.

WhoisXML API Internet Infrastructure
Internet Infrastructure

Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.

Enterprise API Packages
Enterprise API Packages

Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.

Security Intelligence (SI) Suite
Security Intelligence (SI) Suite

Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.

Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.

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Our mission

We deliver the most comprehensive domain, IP, DNS, and cyber threat intelligence data to enable a more secure and transparent Internet for all businesses.

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50 Billion+Domains and subdomains
21.0 Billion+WHOIS records
116 Billion+DNS records
14+Years of data crawling
10.4 Million+IP netblocks in total

Why WhoisXML API

WhoisXML API empowers all types of cyber-security enterprises, including MSSP, SOC, Fortune 1000 organizations, government agencies, and SMBs with a digital footprint. We relentlessly collect, process, and deliver the most comprehensive and readily-available domain, IP and DNS intelligence there is on the market.

Our products are the result of advanced and innovative machine learning and data science processes augmented by over a decade of experience and successful partnerships with key Internet security players. Our vast and diverse intelligence also helps cyber-security companies build better tools and platforms for their customers.

#1 coverage for domain, IP, DNS, and cyber intelligence

#1 coverage for domain, IP, DNS, and cyber intelligence

An extensive set of solutions and products

An extensive set of solutions and products

An ever-growing and happy clientele base

An ever-growing and happy clientele base

Our Team

Our team comprises seasoned big data and infosec professionals who embrace our vision of making accurate and reliable threat intelligence available to as many users as possible. We believe that with the right domain, IP, and DNS data, the world's most critical security researchers can back their theories and extract the narratives required to produce a safer, smarter future. We have also been one of Inc. 5000 fastest growing Top IT Companies since 2016.