These entries are queried from radb.net using whois, you can try my project getting these.
:AS266728 route6: 2803:5320::/32 origin: AS266728 descr: Nedetel mnt-by: MAINT-AS19169 changed: hostmaster [at] telconet.net 20211126 #15:06:43Z source: RADB last-modified: 2023-11-13T16:08:56Z rpki-ov-state: valid