WHOIS verification can utilize to combat spam or fraud. As administrators track down registrants who post illegal content or participate in phishing scams. In addition, the agreements from The International Corporation for Assigned Names and Numbers (ICANN) protects domain registrants. By prohibiting the use of WHOIS listings for marketing or spam purposes. Including high-volume, automated queries against a specific registrar. Or registry system (unless doing such queries with the intent to manage domain names).