These entries are queried from radb.net using whois, you can try my project getting these.
:AS50516 route: 91.228.220.0/24 descr: Maxiplace route # 1 origin: AS50516 mnt-by: ru-okbprogress-1-mnt created: 2022-10-19T08:55:53Z last-modified: 2022-10-19T08:55:53Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.228.221.0/24 descr: Maxiplace route # 2 origin: AS50516 mnt-by: ru-okbprogress-1-mnt created: 2022-10-19T08:57:08Z last-modified: 2022-10-19T08:57:08Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.228.222.0/24 descr: Maxiplace route # 3 origin: AS50516 mnt-by: ru-okbprogress-1-mnt created: 2022-10-19T08:58:18Z last-modified: 2022-10-19T08:58:18Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.228.223.0/24 descr: Maxiplace route # 4 origin: AS50516 mnt-by: ru-okbprogress-1-mnt created: 2022-10-19T08:59:16Z last-modified: 2022-10-19T08:59:16Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 146.158.12.0/23 descr: Maxiplace Ltd. origin: AS50516 mnt-by: MNT-MAXIPLACE mnt-by: RIPE-DB-MNT created: 2018-03-26T14:49:15Z last-modified: 2018-03-26T14:49:15Z 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: 146.158.12.0/24 origin: AS50516 mnt-by: MNT-MAXIPLACE created: 2018-03-27T14:34:38Z last-modified: 2018-03-27T14:34:38Z 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: 146.158.13.0/24 origin: AS50516 mnt-by: MNT-MAXIPLACE created: 2018-03-27T14:35:34Z last-modified: 2018-03-27T14:35:34Z 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