These entries are queried from radb.net using whois, you can try my project getting these.
:AS207238 route: 2.57.212.0/22 origin: AS207238 mnt-by: DIGITALOCEAN-MNT created: 2022-09-26T16:07:49Z last-modified: 2022-09-26T16:07:49Z 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: 91.242.68.0/23 origin: AS207238 mnt-by: ITNS-NET-MNT created: 2016-08-04T14:23:30Z last-modified: 2016-08-04T14:23:30Z 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: 91.242.102.0/24 origin: AS207238 mnt-by: ITNS-NET-MNT created: 2018-01-12T15:38:21Z last-modified: 2018-01-12T15:38:21Z 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