![The Prison of Alcatraz [1950's]](https://tr.rbxcdn.com/180DAY-2453db0de94fbed68d51e5b21a6ab7a1/150/150/Image/Png/noFilter)
The Prison of Alcatraz [1950's] #4247429
Membership history
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Members | Change |
|---|---|---|
| 9 Sept 2026, 06:34 | 2 | first reading |
Ownership
Owned by user #117875142 as measured.
Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.
Members we’ve seen
@circuitcision — 14 | Assistant Warden (rank 254)
A sample — only members this register has independently measured, highest rank first. Not the full roster.
Rank structure
Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).
Related groups
Groups whose measured members overlap with this one — a sample from our membership graph.
Open data
Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)
Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.