WHOIS data is usually delivered to end users by dedicated web portals, or through an automated mechanism referred to as "Port 43 Access." While web portals such as https://whois.godaddy.com, can protect against data harvesting using CAPTCHAs and other web-based authentication methods, Port 43 Access has no such protections and is susceptible to automated bulk harvesting of domain data, leading to SPAM and robocalls issues for our customers.