Roblox RegisterIndependent record of Roblox groups · not affiliated with Roblox Corporation
Ultracore

Ultracore #11934838

11
members (measured 3 Nov 2026, 02:11 UTC)
17 August 2021
created (per Roblox API)
10 August 2026
first measured by this register

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 We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)MembersChange
10 Sept 2026, 13:3411first reading

Ownership

Owned by erm (@CattyCat_06) 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

erm (@CattyCat_06) — Stargirl ★ (rank 255)

Alaina (@ii_vanillabean505) — Fans !! (rank 1)

hayden (@EliteHaydenLovesDogs) — Fans !! (rank 1)

MIYAHHHHH (@chocolatedropp8) — Fans !! (rank 1)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

Stargirl ★1
Friends ^^0
Member11
Fans !!10
Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

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.