Harukawa @KZCT3921 #5444969030

12 January 2024

account created (per Roblox API)

26 Aug 2026, 11:06

last measured (UTC)

Username record

@KZCT3921 — observed 26 August 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)

新春川鉄道#35131678

Open data

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

Also a member of

DuoTale Studios#4052729 · 🎮 Player

Jandel's Road Trip#33097934 · Owner

Double Bandit Studios#13751258 · Bandits

Off-Roading Epic Community#11292567 · 👥 Member

IROC Studios Building Roleplaying Community#7064117 · Verified Gamer 🕹

American Plains Mudding#4548068 · Member

Plaid Studio#16790742 · Member

Rock Panda Games#8252064 · Fan

Ronalds#33883891 · Trainee

Ponchokings#5103418 · Passenger

Mad Labs Entertainment#3264547 · Mad Lads

Lightbulb's Studio#6570411 · Member

Rocket Kidz#11131037 · Fans

Hygiene#4234871 · [1] Patient

Robotz's Fan Group#3043322 · 💖 #BeepBoop

SCP | Roleplay Community#5479038 · Roleplayer

Emergency Hamburg#12563021 · Member

devGem#2776987 · Fan / Member

むありあ放送局#15434573 · ゲスト.

Flisk Studios#16201023 · Awesome people

MiniHype Games#32863274 · Member

CineBlox Productions#5101119 · Trainee

RoDark Studios#5545660 · 🧡 Member

Novely Fan Group#12532474 · Member

Fallen worlds official group#9293165 · Member

Quantum Science Inc.#2847031 · Employee

Freshly Shopping UK#11582289 · Trainee Store Colleague

Ploxify Roblox Group#10966032 · Member

[:] Nova Corporation#4965800 · Test Subject

NBTF Community#5164842 · Member

WonderLabs#17386019 · Member

Lordsy#14458400 · Member

Frenzy's Roblox Group#16927870 · Member

666th.#14819386 · ⌖

DisneyLand Robloxia#1217291 · Park Guest

すら温泉グループ#15579608 · お客様

Obakyu Electric Railway official community#32691673 · メンバー/Member

My Hotel Community#35429542 · Member

Nuget.Studios#33384824 · 😎Member

.workspace#12249805 · Member

Crypt Studios.#15513468 · Crypt

SKER 新霧電鉄公式グループ#33248966 · メンバー/Member

島間電鉄｜Shimakan Electric Railway#33169976 · メンバー｜Member

Official Mojave Valley#3519819 · Member

東阪モノレール/Tôhan Monorail#33019693 · メンバー/Member

Parallel Japan Roleplay#16513793 · Community Member

やまのい線乗務員共通グループ#33132473 · 本線乗務員

Arctix Studios#11603956 · Players

関急電鉄/KANKYU ELECTRIC RAILWAY#33166081 · メンバー/Member

Japanese Train Simulator | 高根鉄道#6206489 · Passengers

[Aikyu]藍花急行電鉄 -AikyuRailway-#17372116 · メンバー

こくでんのグループ#32406016 · メンバー/Member

MEIO Group - 名桜グループ#34223926 · メンバー / Member

Vivo's Subscribers#34572105 · Member

ナマコの海原#13585961 · メンバ

TK市グループ/TK City Group#14510935 · メンバー / Member

TwoToned Studios#5289403 · Fan

TOKA RAILWAY#13984019 · 乗務員（運転士、車掌）

Air Traffic Group#643438846 · Member

Japanese Yokohama Railway#33595538 · お客様/Passenger

Narikawa Railway#32402608 · メンバー

WKR Games#34262170 · Skier

Pine Hill Resorts#5911228 · Skier

Alterra Mountain Company#14561657 · Skier

夕陽鉄道/yuhi railway 公式グループ#33231473 · 音源制作者

北川急行電鉄グループ / Kitagawa Electric Railway Group#34230685 · MB / メンバー

建慶鉄道公式（建慶鉄道グループ）#33301738 · 音源製作者

東京メトロ千代田線再現サーバー Toky Metro Chiyoda Line Recreation#33248333 · メンバー

四城鉄道#32895211 · お客様/Passenger

SATONE MILSIM#34972786 · 新隊員教育隊

[JP]警視庁(マップ制作中)#33339010 · 4.訓練生

大ちゃんのイベント参加者グループ#9901393 · 撮影協力者メンバー

南ヶ丘鉄道#16234078 · 1、passenger

KurakitiRailway くらきち鉄道#33981436 · お客様　Passenger

京東市 - KyoTo City#33213719 · 2等陸士/ Private Second Class

結鉄道 Yu Railway#35126353 · 開発者・社員

CyberShopping#33586118 · Senior Custodian

夢が丘鉄道(公式)#32001793 · 乗客/Passenger

[HYR] Huyumori Railway#34058751 · [MB]メンバー

富士電鉄グループ#34036031 · [MB]メンバー｜Member

高山高速鉄道 | takayama High Speed Railway#35174323 · お客様 | Passenger

ROBROX日本鉄道集まり#33779770 · メンバー｜Member

RCDEF#13405359 · nomal member

高咲鉄道-Takasaki Railway#35113875 · メンバー

かはめ鉄道#34423582 · 管理者

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