OWH Domain WHOIS RDAP is a powerful and modern WordPress plugin that enables domain availability checking using exclusively the RDAP (Registration Data Access Protocol), abandoning legacy WHOIS protocol. The plugin provides a complete domain verification experience with an intuitive interface, advanced Gutenberg blocks, and detailed WHOIS/RDAP information.

Why Choose OWH Domain WHOIS RDAP?

Modern RDAP Protocol: Uses only RDAP (JSON) for faster and more accurate queries
Official TLD Validation: Validates domain extensions using IANA’s official list (data.iana.org/rdap/dns.json)
Real-Time Validation: Real-time domain validation with TLD pre-verification
Multiple TLD Support: Compatible with hundreds of official domain extensions

How It Works

Domain Input: Users enter domain name in the search form
TLD Validation: Plugin validates the domain extension against IANA’s official list
RDAP Query: If valid, performs RDAP query to appropriate server
Result Display: Shows availability status with detailed information

Perfect For

Web Hosting Companies: Domain search functionality for hosting services
Domain Registrars: Integration with domain registration systems
Web Agencies: Client domain availability checking
Developers: Modern RDAP implementation for domain services
IT Professionals: Reliable domain information gathering

Technical Highlights

RDAP Protocol: Modern replacement for legacy WHOIS (port 43)
JSON Responses: Structured, machine-readable domain data
IANA Integration: Official TLD list synchronization
Clean Architecture: PSR-4 compliant with dependency injection

Configuration

Initial Setup

Navigate to OWH RDAP Settings
Enable Domain Search option
Set your Search Results Page (create a page with [owh-rdap-whois-results] shortcode)
Set your WHOIS Details Page (create a page with [owh-rdap-whois-details] shortcode)
Save settings

Page Setup

Search Page: Add the shortcode [owh-rdap-whois-search] to any page
Results Page: Create a page with [owh-rdap-whois-results] shortcode
Details Page: Create a page with [owh-rdap-whois-details] shortcode

Gutenberg Block Setup

Edit any page or post with Gutenberg editor
Add a new block and search for “RDAP Domain Search Enhanced”
Configure visual options:
- Colors (text, background, button)
- Typography (font size)
- Borders (radius, width, color)
- Layout (standard or inline)
- Custom CSS

External Services

This plugin connects to external services to obtain domain information and TLD validation data. These services are essential for providing accurate domain availability information and ensuring proper domain validation.

IANA RDAP DNS Bootstrap Service

What the service is: IANA RDAP DNS Bootstrap Service (https://data.iana.org/rdap/dns.json) – The official Internet Assigned Numbers Authority service for RDAP server discovery
What it is used for: Primary source for obtaining the official list of TLD (Top Level Domains) and their corresponding RDAP servers
What data is sent: No personal data is sent. The plugin downloads the public DNS bootstrap file containing TLD-to-RDAP-server mappings
When data is sent: During TLD list updates (manual or automatic) and when validating domain extensions

RDAP Servers (Various Domain Registries)

What the service is: Various RDAP servers operated by domain registries and registrars worldwide (e.g., Verisign for .com/.net, PIR for .org, etc.)
What it is used for: Querying domain registration information and availability status using the RDAP protocol
What data is sent: Only the domain name being queried (e.g., “example.com”). No personal or sensitive information is transmitted
When data is sent: When users perform domain availability searches through the plugin interface

Important Notes:
– Domain queries are cached locally to improve performance and reduce external service requests
– No personal, private, or sensitive data is transmitted to these services
– Only domain names and TLD information are sent for legitimate domain availability checking
– All communications use secure HTTPS connections
– The plugin respects rate limiting and best practices for RDAP queries
– If external services are unavailable, the plugin uses cached TLD data and provides appropriate error messages

Support

For technical support, feature requests, or bug reports:

Support Portal: Link Nacional Support
GitHub: Report issues on our GitHub repository

Transform your website into a professional domain checking service with OWH Domain WHOIS RDAP today!