These entries are queried from radb.net using whois, you can try my project getting these.
:AS-CTB-DALINK as-set: AS-CTB-DALINK descr: CTB's customer, AS272764 members: AS272764 mnt-by: MAINT-AS36678 changed: liuyong [at] ctamericas.com 20220812 #20:21:18Z source: RADB last-modified: 2023-11-13T16:12:07Z