These entries are queried from radb.net using whois, you can try my project getting these.
:AS60733 route: 88.218.136.0/22 origin: AS60733 mnt-by: mnt-rs-perke-1 mnt-by: BERI-MNT mnt-routes: BERI-MNT created: 2019-01-16T11:28:00Z last-modified: 2019-01-16T22:10:43Z 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: 88.218.136.0/24 origin: AS60733 mnt-routes: BERI-MNT mnt-by: BERI-MNT created: 2019-09-29T21:06:26Z last-modified: 2019-09-29T21:06:26Z 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: 88.218.137.0/24 origin: AS60733 mnt-routes: BERI-MNT mnt-by: BERI-MNT created: 2019-09-29T21:07:12Z last-modified: 2019-09-29T21:07:12Z 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: 88.218.138.0/24 origin: AS60733 mnt-routes: BERI-MNT mnt-by: BERI-MNT created: 2019-09-29T21:07:50Z last-modified: 2019-09-29T21:07:50Z 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: 88.218.139.0/24 origin: AS60733 mnt-routes: BERI-MNT mnt-by: BERI-MNT created: 2019-09-29T21:08:32Z last-modified: 2019-09-29T21:08:32Z 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: 2a09:ab80::/29 origin: AS60733 mnt-by: mnt-rs-perke-1 mnt-by: BERI-MNT created: 2019-01-16T11:29:46Z last-modified: 2023-11-27T22:39:02Z 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