To improve future domain searches, WHMCS should support the RDAP protocol by default and optionally the current Whois system.
What is RDAP?
The Registration Data Access Protocol (RDAP) is a network protocol that was standardized by a working group of the Internet Engineering Task Force (IETF) in 2015. It is the successor to the WHOIS protocol, which is used to look up the domain name, IP address, Autonomous System Number (ASN), and contact information of Internet resources.
More information about RDAP can be found here:https://www.icann.org/rdap