These entries are queried from radb.net using whois, you can try my project getting these.
:AS201403 route: 185.49.50.0/24 origin: AS201403 mnt-by: MNT-ACC-ICT created: 2021-11-30T12:33:02Z last-modified: 2021-11-30T12:33:02Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route: 185.49.51.0/24 descr: ACC ICT B.V origin: AS201403 mnt-by: MNT-ACC-ICT created: 2015-01-16T11:22:21Z last-modified: 2015-01-16T11:22:21Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid route6: 2a04:b700:185d::/48 descr: ACC ICT B.V origin: AS201403 mnt-by: MNT-ACC-ICT created: 2015-01-16T11:26:15Z last-modified: 2015-01-16T11:26:15Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid