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 MoreFind out what category any website belongs to quickly and with high accuracy. Simply type the domain name to get started. Download our product sheet to learn more.
A website category lookup is an online service that identifies a specific domain name’s category. It utilizes various technologies like ML and NLP combined with human validation to analyze the content and characteristics of a site. By examining factors like keywords, structure, and other indicators, the lookup tool determines the domain’s appropriate category.
Obtain the most relevant category of any website within seconds along with Autonomous System details and the domain's WHOIS record creation date. Website Categorization Lookup uses advanced algorithms to provide rapid and accurate results with assigned confidence scores.
Simply enter the domain name into the input box to determine its category. The result’s URL can be copied and shared with colleagues for reference.
Enforce workplace web usage policies and prevent access to inappropriate or harmful content at home using a fast and accurate website categorization lookup service.
Enrich business-to-business (B2B) customer segmentation and marketing with precise site categories for more effective and data-driven digital campaigns and advertising efforts.
Apply for early access to our website categorization database.
Apply for Early Access“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.”
“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.”
“With other APIs, there’s a tendency for requests to fail. But I didn’t notice that with Website Categorization API. I noticed that whenever a request was made, the website was always categorized.”
“I used WHOIS API and Website Categorization API. Both tools are simple and straightforward to use. Some API providers have extra bells and whistles that they force you to use, but WhoisXML API is really easy to work with. It’s stable, and I can trust that it’s not going to flatline later.”
Our APIs are available in an enhanced version that offers better performance with a dedicated load balancer and a premium endpoint to enable faster throttling for large-scale API deployments.
Learn moreWebsite Categorization Intelligence is also available in API form as part of our enterprise API packages. Our enterprise solutions offer flexibility for more effective business planning and product integration.
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