mpub.ne.jp

The registry answered, but its answer does not say whether the name is taken. Its full answer is below.

Checked

WHOIS

[ JPRS database provides information on network administration. Its use is    ]
[ restricted to network administration purposes. For further information,     ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e'     ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'.                 ]
Domain Information: [ドメイン情報]
a. [ドメイン名]                 MPUB.NE.JP
b. [ねっとわーくさーびすめい]   えんばーぽいんとかぶしきがいしゃ
c. [ネットワークサービス名]     エンバーポイント株式会社
d. [Network Service Name]       EmberPoint Co., Ltd.
k. [組織種別]                   ネットワークサービス
l. [Organization Type]          Network Service
m. [登録担当者]                 YT36265JP
n. [技術連絡担当者]             YT36265JP
p. [ネームサーバ]               ns-660.awsdns-18.net
p. [ネームサーバ]               ns-1561.awsdns-03.co.uk
p. [ネームサーバ]               ns-1192.awsdns-21.org
p. [ネームサーバ]               ns-264.awsdns-33.com
s. [署名鍵]                     
[状態]                          Connected (2027/09/30)
[登録年月日]                    1999/09/09
[接続年月日]                    1999/09/14
[最終更新]                      2026/10/01 01:02:31 (JST)