These entries are queried from radb.net using whois, you can try my project getting these.
:AS198050 route: 91.231.70.0/23 descr: ALFA-SYSTEM origin: AS198050 mnt-by: ITCARE-MNT created: 2011-11-29T15:24:44Z last-modified: 2011-11-29T15:24:44Z 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: 91.231.80.0/22 descr: ALFA-SYSTEM origin: AS198050 mnt-by: ITCARE-MNT created: 2011-11-29T15:24:02Z last-modified: 2011-11-29T15:24:02Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 176.97.24.0/21 descr: ALFA-SYSTEM origin: AS198050 mnt-by: ITCARE-MNT created: 2011-11-29T15:25:08Z last-modified: 2011-11-29T15:25:08Z 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 route6: 2a10:f781:10:a9e3::/64 origin: AS198050 descr: EPIX-LORA-ALFASYSKNU mnt-by: EPOLUDNIE-MNT mnt-by: EPOLUDNIE-MP-MNT mnt-lower: EPOLUDNIE-MNT mnt-lower: EPOLUDNIE-MP-MNT created: 2022-05-13T11:32:41Z last-modified: 2022-05-13T11:32:41Z 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