Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.
Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.
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.
Access our web-based solution to dig into and monitor all domain events of interest.
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.
Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.
Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.
Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.
Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.
Enjoy priority data access with our premium API services topped with extra perks including dedicated team support, enterprise-grade infrastructure, and SLAs for full scalability and high performance.
Multi-Level API User Administration Now Available - Manage individual API keys for team members in your organization.
Learn MoreImplement stricter email filtering and verification policies to boost contact quality with our extensive database of free email domains.
We offer a complete list of free email domains updated with regular additions of new free email services.
Our free email domains list is downloadable as a text file via HTTPS, FTP, or FTPS so you can easily access and integrate it into existing systems or use it to run scripts.
Improve the quality of your leads and enjoy higher conversion rates by filtering out free email addresses.
Strengthen email filtering requirements by including free email domains in your filtering criteria, as they can serve as vehicles for spam and phishing.
Widen email verification criteria by integrating our free email domains list to your email verification tools for a more accurate validation process.
“WhoisXML API data helps us make informed and automated decisions, filtering invalid email addresses much faster.”
“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.”
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