These entries are queried from radb.net using whois, you can try my project getting these.
:AS43764 route: 31.43.224.0/19 descr: SEVLUSH-DYN origin: AS43764 mnt-by: SEVLUSH-MNT mnt-by: UZH_SEVLUSH-MNT created: 2011-03-02T19:49:33Z last-modified: 2023-12-27T08:05:20Z 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: 91.195.156.0/23 descr: SEVLUSH origin: AS43764 mnt-by: SEVLUSH-MNT mnt-by: UZH_SEVLUSH-MNT created: 2007-10-15T10:21:26Z last-modified: 2024-01-02T14:32:47Z 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