Website Categorization API | Domain Category Check | WhoisXML API

Accurately classify any domain name with Website Categorization API

Leverage accurate and up-to-date web categorization data obtained via modern web classification techniques like NLP and ML for more effective, faster, and data-driven cybersecurity, marketing, and business decisions.

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100 free API requests. No credit card required.

230 Million+Websites parsed
4 Million+Websites parsed daily
80+Categories
52,000+Satisfied customers

Benefits of Our Website Categorization API

  • Precise, Detailed, and Fast

    A confidence score and available categories are provided for each queried domain or URL. Output also includes the domain's WHOIS record creation date and Autonomous System data.

  • Multilanguage Support

    Go global and implement uniform website restriction policies across multiple locations and languages.

  • Consistent Output

    Save time and resources with well-parsed and easy-to-integrate API outputs in JSON format.

Practical Usage

Implement Web Filtering

Filter and block access to prohibited websites at work to boost employee productivity and comply with web usage policies using Website Categorization API. Supplement parental control systems by blocking specific web content or safelisting kid-friendly websites.

Augment Endpoint Security

Monitor and analyze user access logs and browsing behaviors across endpoints and determine frequently visited websites to gain in-depth insights when formulating endpoint security strategies.

Enrich Marketing and Advertising Activities

Use precise website categorization to support online advertising strategies and business-to-business (B2B) marketing contact enrichment and segmentation.

Website Categorization API

Website Categorization Database

Get access to our up-to-date website categorization database, enriched with data points, including website domains’ WHOIS creation date, country code, and IP addresses’ Autonomous System (AS) details.

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Website Categorization API

Get 100 free API requests. No credit card required.

Get started

Premium API Services

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.

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Enterprise API Packages

Tired of constantly renewing subscriptions? Get a year’s worth of API access. The amount you pay depends on the desired query volume that matches your business requirements.

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