The Registration Directory Service Review, formerly known as "WHOIS" (RDS-WHOIS2) is mandated by ICANN Bylaws Section 4.6(e) to assess the effectiveness of the then current gTLD registry directory service and whether its implementation meets the legitimate needs of law enforcement, promoting consumer trust and safeguarding registrant data.
| WHOIS1 (conducted under the Affirmation of Commitments) | Concluded in 2012 |
| RDS-WHOIS2 | Concluded in 2019 |
