Building an app that performs a Whois query is quite simple. In this article, we’ll show you how to do that in just a few steps. For processing Whois queries, we will learn how to use Whois API.
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Who Is Whois Query?
Whois is a protocol that allows users to query information about registered domain names. This information can include the registrant’s name, contact information, and creation date. Whois queries are often used to check if a domain name is available or to find the owner of a domain name.
How To Perform A Whois Query?
Performing a Whois query is a simple process that can be completed in just a few steps. The first step is to find a Whois lookup tool. Many Whois lookup tools are available online, such as WhoisXY and Whoisology. Once you have found a Whois lookup tool, enter the domain name or IP address into the search field, and there you go.
The results of the Whois query will provide you with information about the domain name’s owner or IP address, contact information if access is given, and the registration data.
With this information, you can determine if the domain name or IP address is currently in use, and if so, who owns it and how to contact them.
What Is Whois API?
Whois API is a simple, free and easy-to-use API that allows you to perform a Whois query on any domain name. This can be useful for finding out who owns a domain name and checking if a domain name is available. The API is accessed via a simple URL, and results are returned in JSON format.
What Are The Use Cases Of Whois API?
There are many different ways to build a whois query application. Here are some examples of whois apps that perform well:
- Whois API by APILayer: This simple API allows you to query the whois database from your site or application. It provides results in both JSON and XML formats.
- WhoisXML: This is an XML-based whois service that provides detailed information about domains, IP addresses, and registrars. It also offers an easy-to-use API for integration into your application.
- WhoisJS: This JavaScript library makes it easy to query the whois database from your website or application.
- WhoisQ: This simple online tool allows you to perform whois queries from your web browser.
How To Integrate Whois API?
As you know, APIs are designed to be flexible and portable. Our Whois API by APILayer is simple and easy to integrate regardless of your technology.
Whether you want to build your free domain discovery platform or try to check thousands of domains’ availability for any reason, Whois API by APILayer will help you.
Whois queries are pretty simple to code, but when you deal with thousands of Whois queries daily, it becomes complicated since NIC servers have strict rate limits.
Whois API uses API access keys to authenticate requests. After signing up, you can view and manage your API keys on the accounts page.
You can send call requests to the API endpoints with your API access key.
Here you can check if a domain name is available for purchase or not with this API endpoint.
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curl --request GET \ --url 'https://api.apilayer.com/whois/check?domain={domain}' \ --header 'apikey: TzzNVRZlsoOBRairyXMe6s546iKcyS2K' JSON Response: { "result": "registered" } |
How To Integrate An API In Delphi?
Be sure to download the Delphi Community Edition and create a new multi-device application using Delphi where you can build and deploy your app to iOS, Android, Windows, macOS and Linux using a single source code.
After creating a new multi-device application using Delphi, you can design your user interface similar to this one.
After designing and putting the REST Client components, you can write this code so that you can check any domain names that you want:
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procedure TForm1.Button1Click(Sender: TObject); begin RESTClient1.ResetToDefaults; RESTClient1.Accept := 'application/json'; RESTClient1.AcceptCharset := 'UTF-8, *;q=0.8'; RESTClient1.BaseURL := 'https://api.apilayer.com/whois/query?apikey=' + Edit1.Text + '&domain=' + Edit2.Text; RESTResponse1.ContentType := 'application/json'; RESTRequest1.Execute; Memo1.Text := RESTResponse1.Content; end; |
You can get the whole project source code from this repository [1]. Furthermore, check out these tutorials to learn about integrating various APIs:
- How To Use Reverse Phone Number Lookup Free?
- 5 Examples Of Successful Free Weather APIs
- How To Find Someone’s Location With IP Address
Why Should You Consider Using Whois API By APILayer?
As you can see, this Whois API by APILayer is simple, inexpensive, and easy to integrate with any programming technology. Head to the official page and get your free API access key!
[1] https://github.com/MuminjonGuru/WhoisAPIDemo
