iij.ad.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]                 IIJ.AD.JP
e. [そしきめい]                 かぶしきがいしゃ いんたーねっといにしあてぃぶ
f. [組織名]                     株式会社 インターネットイニシアティブ
g. [Organization]               Internet Initiative Japan Inc.
k. [組織種別]                   JPNIC会員ネットワーク
l. [Organization Type]          JPNIC Member's Network
m. [登録担当者]                 TM003JP
n. [技術連絡担当者]             TM003JP
p. [ネームサーバ]               dns0.iij.ad.jp
p. [ネームサーバ]               dns1.iij.ad.jp
s. [署名鍵]                     45574 8 2 (
                                52082D43E3397368EB325578AEA0748C
                                6A2ED1958DA0F05B3ED4EC0CF668E32A )
[状態]                          Connected (2027/03/31)
[登録年月日]                     
[接続年月日]                    2011/01/18
[最終更新]                      2026/04/01 01:01:37 (JST)