saitama-u.ac.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]                 SAITAMA-U.AC.JP
e. [そしきめい]                 さいたまだいがく
f. [組織名]                     埼玉大学
g. [Organization]               Saitama University
k. [組織種別]                   大学
l. [Organization Type]          University
m. [登録担当者]                 HU25461JP
n. [技術連絡担当者]             HS51222JP
p. [ネームサーバ]               ns1-01.azure-dns.com
p. [ネームサーバ]               ns2-01.azure-dns.net
p. [ネームサーバ]               ns3-01.azure-dns.org
p. [ネームサーバ]               ns4-01.azure-dns.info
s. [署名鍵]                     
[状態]                          Connected (2027/03/31)
[登録年月日]                     
[接続年月日]                    2019/04/16
[最終更新]                      2026/04/23 15:45:43 (JST)