Roblox RegisterIndependent record of Roblox groups · not affiliated with Roblox Corporation
Best Developer Mastieve

Best Developer Mastieve #859594107

423,882
members (measured 4 Sept 2026, 23:22 UTC)
22 April 2026
created (per Roblox API)
10 August 2026
first measured by this register

Best Developer Mastieve is a Roblox group community created on April 22, 2026. The group has 417,300 members and is not ownerless. It does not have a verified badge. The category is not specified.

Membership history

Growth

412,052423,882417,96710 August 20264 September 2026
945 measurements spanning 25 days, net +11,830. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 410,278–425,657 and does not start at zero.
Measurement log — every members count we have recorded, most recent 20 of 945
Measured (UTC)MembersChange
4 Sept 2026, 23:22423,882+1
4 Sept 2026, 23:01423,881+3
4 Sept 2026, 21:31423,878-2
4 Sept 2026, 21:10423,880+3
4 Sept 2026, 20:10423,877+6
4 Sept 2026, 19:11423,871+7
4 Sept 2026, 18:12423,864+5
4 Sept 2026, 17:41423,859+1
4 Sept 2026, 17:20423,858+5
4 Sept 2026, 16:20423,853+1
4 Sept 2026, 15:50423,852+2
4 Sept 2026, 15:21423,850+10
4 Sept 2026, 13:30423,840+13
4 Sept 2026, 12:00423,827+4
4 Sept 2026, 11:32423,823-1
4 Sept 2026, 11:31423,824+8
4 Sept 2026, 09:40423,816+2
4 Sept 2026, 08:41423,814+6
4 Sept 2026, 08:10423,808-1
4 Sept 2026, 07:41423,809first reading

Ownership

Owned by Master_Dev (@Mastieve) as measured.

Claimed by user #591336089 — observed between sweeps, detected 10 Aug 2026, 12:10 UTC

Detection dates bound when a change was seen by this register, not when it happened.

Experiences

61
players in this group’s experiences right now
2,372,190
lifetime visits across 1 experiences

Experiences this group owns, by lifetime visits. Live-player counts are from our last measurement.

Members we’ve seen

Master_Dev (@Mastieve)Owner (rank 255)

CATALYZE (@MrCatalyze)Admin (rank 254)

nyeli (@builderman5y)Member (rank 1)

AnggaRawr (@BorutoKunkawai01)Member (rank 1)

ninjax (@Ziyadpro_8)Member (rank 1)

kaelyn (@DesiredvAva)Member (rank 1)

Z0z_likewhy (@Dodge21JOEY)Member (rank 1)

Kritchawat (@Kritchawat_26)Member (rank 1)

yumdut (@Yuyuyumnaaanna)Member (rank 1)

8ix (@lana_Badreiq)Member (rank 1)

FelipeShCry (@Shirokovorig)Member (rank 1)

Ryxi (@Meuuuuuhhhhh)Member (rank 1)

00_Marvelous (@marvel0us123)Member (rank 1)

adriano (@Maykel_1315)Member (rank 1)

Meowchi (@AnnaMaria2B13)Member (rank 1)

WOW (@OXMASTERDJ)Member (rank 1)

official_scythee (@23giulio2)Member (rank 1)

TSL_Bluemans (@sigmasigmaboy9298)Member (rank 1)

BI_AIKO (@Itz_ZuzuRoblox)Member (rank 1)

Kantoka (@urdigitalnoob)Member (rank 1)

D4RK (@roblox_user_9987312346)Member (rank 1)

PlaydaPlayer (@Gameingchris_duck)Member (rank 1)

711 (@29vibexs)Member (rank 1)

Faith (@113FaithO123)Member (rank 1)

apaansih (@FatehAmin20172)Member (rank 1)

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

Rank structure

Owner1
Admin1
Member413,309
Guest0

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.