Dear Review Team members, In response to the written briefing request submitted on 1 February, please find attached the written briefing document for Recommendation 4 on compliance. Briefings received to date are compiled on your background materials page - https://community.icann.org/display/WHO/Background+Materials - under WHOIS1 Implementation Material as well as on the relevant subgroups’ pages. Briefings for remaining questions will be shared as soon as available. Thanks Kind regards, Alice