These entries are queried from radb.net using whois, you can try my project getting these.
:AS-CTB-InfraMais as-set: AS-CTB-InfraMais descr: CTB's customer, AS21712 members: AS21712 mnt-by: MAINT-AS36678 changed: liuyong [at] ctamericas.com 20220420 #20:05:54Z source: RADB last-modified: 2023-11-13T16:10:52Z