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What Is The Best DNS Classification Solution In 2021?

A domain can be classified into a content category using Website Categorization API. It takes a URL as an input and categorizes it according to its industry. There are many Categorizations APIs available on the internet, but Klazify seems to be the most famous and should satisfy all of your requirements.

Klazify Website Categorization API uses advanced technologies combining website filtering and categorization to provide DNS/IP servers the logical right course of action in URL categorization. One of our aims is to provide online filtering and security solutions to DNS/IP websites

The Website Categorization API from Klazify scans a website’s content and meta tags using a machine learning (ML) engine. It uses natural language processing to extract text from the web and sort it into up to three categories (NLP).

Customers that need a local alternative for domain categorization will benefit from their offline database. Hardware/product integrations, personalized software, and internal usage at a large enterprise company are also common use cases.

How Klazify works

Klazify can go to the requested domain name or URL, gather its content, and classify it according to an IAB V2 Standard classification taxonomy, which can be used for 1-1 personalization, marketing segmentation, online filtering, and more. As a result, the URL or domain will now be assigned to a particular category.

State Of The Art Accuracy

Their website categorization API is extremely accurate; a quick URL search would identify a company’s industry into one of 385 potential topic categories.

Domain Processing

Klazify’s domain processing begins one of two ways:

  • New Domain Ingestion: Klazify examines the website, chasing new domains and re-indexing previously categorized domains.
  • External feeds: External data sources that are given to Klazify to process


Once a URL has been processed and passed the safety checks, it gets categorized. 

Domain Categorization

There are several topic categories to choose from, making the list exhaustive but somewhat shorter than most categorization taxonomies.

The categorization provided by Klazify is suitable for internet filtering and security applications, and the best part is that it’s free. They support nearly all of the world’s languages as well as all of the domains online.

Klazify uses the IAB’s Classification Taxonomy, which has previously been mentioned. The IAB (Interactive Advertising Bureau) is a non-profit organization that promotes interactive advertising. For promotional purposes, they’ve developed a common set of categories and subcategories.

For example, if a publisher is putting together a campaign on Google Ads and only wants to show up on specific websites, Google utilizes the IAB classification to decide which category a certain domain belongs to. This means that if publishers are using Klazify to determine if websites URLs are relevant and pertinent for them to advertise on, the categorization that is given to them in Klazify is also used on advertising websites all over the internet.


For Advertisers, Klazify offers domain data categorized to the IAB taxonomy. Through Klazify’s API, customers can process large sets of data, allowing them to identify patterns between IPs and backlinking information or to categorize your data set. Advertisers often find this information useful in order to enhance customer demographics and better understand their behavior.

If Klazify has finished categorizing a domain, the domain can be assigned to several categories. Using the IAB standards, a single website can only be classified into three categories.

The IAB has nearly 385+ possible topic categories to choose from. 

Network & Cybersecurity

Klazify’s APIs and data feeds are used by network and cybersecurity organizations all over the world to provide industry-leading threat intelligence and domain categorizations. Klazify’s Domains API, for example, can be used to dig further into network traffic or to categorize user access logs using their domain categorization API.  Klazify incorporates over 66 data feeds to augment the engine.

Why Is Klazify The Best Option For Categorizing a Website?

  • Powerful & scalable

Klazify can scale to millions of requests and keep being stable under heavy workloads.

  • Easy-to-integrate

Customer’s time is valuable which is why Klazify’s APIs are simple to use and easy to integrate.

  • Dedicated Support Manager

Their Customer Support Team is always there to answer any questions.

  • Simple documentation

Each endpoint is well documented with examples so a customer can quickly get started.

Key Features

Big Data

Using advanced machine learning, Klazify categorize billions of web pages, keeping the categorization database one of the most accurate in the industry.

Wide Range of Applications

Klazify’s domain categorization allows customers to easily provide services such as Internet filtering, subscriber analytics, advertising networks, and fraud prevention.

Data Firehose

Need access to the raw data stream of everything as it’s being categorized? Klazify provides a real-time data firehose via HTTP.

Advanced Algorithms

Klazify‘s algorithm classifies content on URLs, as well as whole websites and IP addresses, making it ideal for security applications that don’t have access to the full URL.

Developer-Friendly Responses

Every API response is returned as JSON, which can be easily read and implemented into your product.

Always Up to Date

Klazify’s web crawlers are constantly visiting and classifying new and existing websites, providing real-time results and keeping the database always up to date.

So what’s the difference between the other website categorization API and Klazify?

Klazify is the nearest thing to a true human being searching every nook and cranny of the domain you’re interested in.The added bonus is that for less than $790.00 a year, this tool can do this on hundreds of thousands of websites in a single minute.

Also published on Medium.

Published inAppsArtificial Intelligence (AI)
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