These entries are queried from radb.net using whois, you can try my project getting these.
:AS56428 route: 91.223.136.0/24 origin: AS56428 mnt-by: MNT-SANNET created: 2011-04-05T18:06:40Z last-modified: 2024-04-16T09:54:26Z 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: 146.120.185.0/24 origin: AS56428 mnt-by: RIPE-DB-MNT created: 2024-04-16T09:54:27Z last-modified: 2024-04-16T09:54:27Z 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: 2a01:7120:7::/48 origin: AS56428 mnt-by: PITLINE-MNT created: 2022-08-20T18:30:00Z last-modified: 2022-08-20T18:30:00Z 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