Extract: "Earlier this week, brand new top level domain name .RIP was launched for general availability by registry Rightside. The idea for .RIP is to “offer a new way for friends and family members to memories and pay their respects to lost loved ones.” A little under 400 names have been registered so far according to nTLDstats.com but it seems most of the folks outside of our little industry thought it was a hoax or early April’s fools joke".
Source: http://dngeek.com/2015/01/the-internets-response-to-rip/.
Domainers register their domain names with Uniregistry.