Whois API in {Json - Xml}

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With Unirest you can easily perform your call to our API.
Use the language you prefer.
Our parsed WHOIS data is provided in Json or Xml format for easy access.

500 requests free per month

Check out our sister site NsJson! DNS Lookup and reverse IP API in JSON.


WhoisJson API usually pulls records from origin Whois servers in real time, so you get up-to-the minute results. We cache some records for performance, but you can bypass the cache as needed.


Cleans up the records and pulls them apart into well-defined fields. Our system normalizes character sets and line endings, pulls the various fields from the raw text, and puts the fields in a consistent, automation-friendly format (XML or JSON).


Avoids query rate limits that you would encounter when doing Whois queries from your own IP address. Our system uses caching and a large pool of diverse IP addresses to minimize blockages and ensure that you get the records you need.

Experience and commitment

Serious Uptime

Quickly and easily get up to date whois data for all domains. Data is updated every week to make sure you get the most relevant information.

Flexible Format

Get public information for the domain you are looking for in JSON or XML format

Fast Support

A comprehensive pricing system and dedicated support network makes sure you get the most out of our services.

Much more than a simple API

Domain Information

Use WHOIS lookup to check domain name availability and to discover the contact information of a domain owner.

Reverse Whois

This API displays as much information as possible for a given IP address, sourced from our private database.


NsLookup queries the specified DNS server and retrieves the requested records that are associated with the domain name you provided.

250 random whois

This special endpoint give your 250 random whois from registered domain.