IP whois API – IP lookup announcement

After the announcement of our Whois API with XML output (back in June) and our Domain Score API (back in May), we are now introducing our 15th API. It’s a bit hard to pronounce IP whois API, but the benefits will certainly outweigh that issue. There are many IP check services and some we already have. For example, our Geolocation API (discontinued in 2022), so you might be wondering, what is the difference between our IP geolocation API and the new IP whois API?

Just by looking at the output, it is clear that the geolocation API is focused only on the geolocation (country, city), while the IP whois API (discontinued in 2022) is a more robust API with complete information around an IP address. You still get the country code of the IP address, but you also get IP owner information like the organization’s owner name, address, phone, abuse email, date of IP address creation, and other information (check the screenshot below).

IP address check API

IP Whois API response in JSON – example

The example above is shown in JSON, but XML version is also available.

We would love to hear your feedback on this API, and as with all new signups and all our APIs, you are allowed to make 10,000 requests for free.

Benefits of IP Whois API

If you track the IP address of your website visitors or application users, you can programmatically:

  1. check the country of their origin
  2. get the abuse email address in case this IP is part of a DDOS attack or other malicious activity
  3. detect hosting providers for certain domain names
  4. How are you using IP lookups? Let us know in the comments

How you can use IP Whois API is different than how you can use a Whois Lookup API. That’s because these are two different APIs. One checks the whois of an IP Address, while the Whois Lookup API checks the Whois record of a domain name.

This concludes the announcement of our latest addition to the list of our APIs. Don’t forget to check our other APIs, and signup for 10,000 free requests. This special offer is available only to new users.


Goran Duskic has been the Founder and CEO of WhoAPI Inc. since 2011, a company that specializes in developing APIs, including the well-known Whois API. He started his career in internet entrepreneurship in 2006 and has co-founded several online businesses, including a web hosting company that he later sold. Goran's work primarily involves creating practical API solutions to meet technological needs.

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