Key Features

Instant Domain Age Retrieval: Calculates the exact domain age in years using real-time WHOIS registry data.
Registration Date Display: Displays formatted creation dates (e.g., Creation Date: January 1, 2020).
Asynchronous AJAX Requests: Processes checks smoothly without reloading the web page.
Automatic Domain Normalization: Automatically strips http://, https://, and URL sub-paths from user inputs.
Built-in Security & Validation: Integrated with WordPress nonces and strict regex pattern matching to prevent malicious inputs.
Soft Purple UI Design: Clean, modern card layout with responsive styling that integrates seamlessly with most WordPress themes.

Ideal For

SEO Agencies & Consultants: Offer free domain evaluation tools to attract prospective clients.
Domain Brokers & Flippers: Quickly verify domain age and history before placing bids or listing domains for sale.
Digital Marketing Blogs: Increase audience engagement and time-on-site by embedding a useful web utility.
Web Hosting & Registrar Websites: Provide helpful pre-purchase or domain transfer checks for customers.

Zero Bloat: Pure PHP, CSS, and Vanilla JS code without heavy external JavaScript libraries or framework dependencies.
Enhanced User Engagement: Adds interactive utility to your site, boosting organic traffic and visitor retention.
Simple Integration: Easily embed the tool on any page, post, or widget area via a simple shortcode.
API Efficiency: Direct integration with WhoisXMLAPI ensures high accuracy and reliable response rates.

You can set up this snippet in a few simple steps:

Install and activate the Code Snippets plugin from the WordPress plugin directory.
Go to Snippets > Add New in your WordPress dashboard.
Title your snippet (e.g., Domain Age Checker) and select PHP Snippet.
Paste the complete PHP code into the editor.
Replace 'YOUR_DOMAIN_AGE_CHECKER_KEY_HERE' in the code with your actual API key from whoisxmlapi.com.
Click Save Changes and Activate.

Navigate to Appearance > Theme File Editor in your dashboard (or access via FTP/cPanel).
Open the functions.php file of your active Child Theme.
Paste the code at the bottom of the file and insert your API Key.
Click Update File.

Simply place the following shortcode on any Page, Post, or Widget:

Plaintext : [domain_age_checker]

WordPress Versions: WordPress 5.0 or higher (fully compatible with WordPress 6.x).
PHP Versions: PHP 7.4 up to PHP 8.3+.
Page Builders: Compatible with Elementor, Divi, Gutenberg, Beaver Builder, and Classic Editor.
Browsers: Modern web browsers including Chrome, Firefox, Safari, and Edge.

Complete Source Code: Fully customized, commented PHP, CSS, and JavaScript snippet ready for deployment.
WHOIS XML API Integration: Pre-configured API routing structure for seamless server-to-server communication.
Responsive UI Interface: Styled card layout featuring the soft purple theme.

Q: Do I need an API key to use this tool?
- A:Yes. The snippet utilizes WhoisXMLAPI to fetch domain data. You can sign up for a free account on WhoisXMLAPI to receive your own API key.
Q: Where do I insert my API key?
- A: Locate the line define('WHOISXMLAPI_KEY_AGE', 'YOUR_DOMAIN_AGE_CHECKER_KEY_HERE'); near the top of the PHP code and replace the default string with your key.
Q: Why does a domain show “Domain Age: not available”?
- A: Some country-code TLDs (ccTLDs) or restricted registries mask or omit public creation dates due to privacy regulations.

Child Theme Usage: If adding the code directly to functions.php, always use a child theme so changes are not overwritten during theme updates.
API Rate Limits: Ensure your WhoisXMLAPI plan has adequate query credits if your website experiences high traffic volume.