These entries are queried from radb.net using whois, you can try my project getting these.
:AS138056 route6: 2001:df6:5900::/48 origin: AS138056 descr: Customer Route mnt-by: MAINT-AS55655 changed: sarah [at] sims.co.id 20200516 #14:41:46Z source: RADB last-modified: 2023-11-13T16:05:43Z rpki-ov-state: valid