rook.io

Records show rook.io selling for $3,000 on Park.io in November 2016. The label does not resolve into dictionary words: 4 characters, 2 vowels, ending in “ok”. At 0.35× the median .io sale in our records ($8,500), it landed in the lower third of the .io transactions we have logged since 2023. The .io cohort we track since 2023 now holds 164 sales, a median of $8,500 and a top decile above $52,700. No earlier sale of this exact name appears in our records, so this is its first tracked transaction. Closest .io comparables in the same price band include pixelate.io ($3,000) and member.io ($3,000).