4BLXY CHALL @koster_y #11125301806

followers (as measured)

17 June 2026

account created (per Roblox API)

25 Oct 2026, 17:45

last measured (UTC)

Username record

@koster_y — observed 25 October 2026

Roblox’s API lists prior usernames without dates; the dates above are when this register observed each name, which bounds — but is not — the change date.

Groups owned (as measured)

Doa #1700 #dump on sight#230035141

Ogz #courtlandt Wiping shii#421101918

Open data

Download this user’s observed record: username history (CSV) · record (JSON)

Also a member of

SecretVerse Studio#1074557114 · Membre

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Motor6D Studios#33239990 · Member

2,868,986

Devs 4 U Productions#33064017 · Member

2,520,842

Scruffy Games#5042848 · Scruffies

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DR1LLIN#14032806 · Community Member

1,134,775

thanks roblox <3#35898727 · Join game

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STB / Spin The Block#15258900 · [💰] STB Dragon Access

650,941

Crimelife: CIA#32457843 · No Access

354,790

Cave With Diamonds#632502523 · Member

317,051

we like noodles erday#197378083 · Member

268,616

DreamNights#136239696 · 💎Member💎

203,258

Hoops Life#11126716 · Member

114,131

[HTB] HIT THE BLOCK#33652096 · HTB FAM

100,208

trapstas#34843309 · (CM) COMMUNITY

86,963

Kagi.#189886033 · Community Member

29,668

OG NEW#10461067 · Member

SBRW DOA #Sevside#621409565 · Member

SBUC:OGZ#1019930217 · Member

SBD: YGZ#87134746 · Admin

TTK# train to kill#41833534 · Member

SBLT | DOA - DEAD ON ARRIVAL#1090576614 · DOA - CO OWNER

Richboy21#17323269 · Owner

SBUT DOA#735124503 · DOA owner

Membership and rank as measured from this user’s public group list.