These entries are queried from radb.net using whois, you can try my project getting these.
:AS1811 route: 192.46.204.0/24 origin: AS1811 descr: DXC Technology admin-c: ESIPA-ARIN tech-c: ESIPA-ARIN mnt-by: MNT-ESLAC-Z created: 2023-04-13T14:45:52Z last-modified: 2023-04-13T14:45:52Z source: ARIN rpki-ov-state: valid