HP fandom! #8965445

members (measured 29 Oct 2026, 20:55 UTC)

2 January 2021

created (per Roblox API)

10 August 2026

first measured by this register

OtherENHarry Potterfandomtrivia

Description

This group is for any HP fans (Harry Potter)! Here you can nerd out about Harry Potter, and if you have never read Harry Potter, you can learn about it! I will ask a question on Tuesday, Thursday, and Saturday, and post the answer the next day. The question is optional, of course, but I thought it might be fun 😁 Also, please try and buy some of the group merch! Rules: NO BULLYING Be respectful of other opinions Have fun!

Written by the group; not a statement 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 We do not publish numbers we have not measured.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)	Members	Change
29 Oct 2026, 20:55	13	first reading

Ownership

Owned by mina (@Aluminumdragon3045) 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

mina (@Aluminumdragon3045) — Headmaster (rank 255)

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

Rank structure

Headmaster0

Professor0

Member13

Not sorted0

Ravenclaw0

Hufflepuff0

Gryffindor0

Slytherin0

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.