The Transition from WHOIS to RDAP: What You Need to Know

Feb 03, 2025 @ 10:03 am

RDAP The WHOIS system, long used for retrieving domain registration details, has been sunset in favor of the new Registration Data Access Protocol (RDAP). This transition, initiated by ICANN, is designed to modernize and enhance the security of domain registration data management.

Why RDAP?

RDAP introduces several advantages over the existing WHOIS system:

Improved Security: RDAP controls access more effectively, allowing only authorized users to view specific data.
Multilingual Support: Unlike WHOIS, RDAP accommodates various languages and character sets, making it more inclusive.
Structured Data Format: Information is presented in a standardized format, facilitating easier processing.
Controlled Data Access: Different user categories, like law enforcement, may have varying levels of access to data.

Although RDAP has been in use by ICANN-accredited registrars and gTLDs since 2019, the full transition aims to be seamless for users.

What Does That Mean for Me?

For everyday users, the shift from WHOIS to RDAP will not significantly affect the lookup of domain registration information. Access will remain available through ICANN’s RDAP-based Lookup Service at lookup.icann.org, and many registrars might still offer WHOIS access temporarily.

Domain registrars face the challenge of updating their systems to support RDAP while maintaining compatibility with existing WHOIS-dependent services. They will also need to ensure that registration data is securely managed and adhere to the updated ICANN protocols.

For end users, especially business owners and cybersecurity experts, minor adjustments may be necessary to access certain non-public domain data. For those needing additional information, ICANN’s Registration Data Request Service (RDRS) will be available through participating registrars. The process introduces enhanced security and a level of structured access that users must be prepared to navigate.

Will WHOIS Be Completely Phased Out?

While registrars are theoretically capable of discontinuing WHOIS at this juncture, many will likely continue its availability due to reliance on the data it provides. Eventually, however, RDAP is expected to become the sole protocol for domain data management.

This transition marks a significant step towards a more secure and efficient system for handling domain registration information. As users familiarize themselves with RDAP, the overall objective is to ensure a smooth adjustment without major disruptions.

For further details, visit the official ICANN announcement here.

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