These entries are queried from radb.net using whois, you can try my project getting these.
:AS51412 route: 193.150.152.0/21 descr: Endemol-152 origin: AS51412 mnt-by: KPN-MNT created: 2011-03-30T15:43:38Z last-modified: 2020-03-09T14:37:36Z 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: 193.150.156.0/22 descr: Endemol-156 origin: AS51412 mnt-by: KPN-MNT created: 2011-03-30T15:55:51Z last-modified: 2020-03-09T15:17:15Z 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 route: 193.150.156.0/24 descr: Endemol-156 mnt-by: KPN-MNT origin: AS51412 created: 2023-04-19T08:09:50Z last-modified: 2023-04-19T08:09:50Z 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: 193.150.160.0/22 descr: Endemol-Supernet origin: AS51412 mnt-by: KPN-MNT created: 2014-06-03T14:34:18Z last-modified: 2020-03-09T15:17:00Z 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: 193.150.164.0/24 descr: Endemol origin: AS51412 mnt-by: KPN-MNT created: 2014-06-03T14:34:53Z last-modified: 2022-06-08T08:27:17Z 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