These entries are queried from radb.net using whois, you can try my project getting these.
:AS51931 route: 85.11.117.0/24 descr: ARPNET origin: AS51931 mnt-by: SGMI-MNT created: 2014-08-21T11:52:37Z last-modified: 2014-08-21T11:52:37Z 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: 91.221.122.0/23 descr: ARPNET origin: AS51931 mnt-by: MNT-ARPNET created: 2010-12-01T12:58:33Z last-modified: 2010-12-01T13:03:15Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a06:aa40:cadb::/48 origin: AS51931 mnt-by: PL-ARPNET-MNT mnt-by: MNT-ARPNET mnt-by: PROMEDIA-IPV-MNT created: 2016-04-01T12:33:07Z last-modified: 2016-04-01T12:33:07Z 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:f781:10:7762::/64 origin: AS51931 descr: EPIX-LORA-ARPNET mnt-by: EPOLUDNIE-MNT mnt-by: EPOLUDNIE-MP-MNT mnt-lower: EPOLUDNIE-MNT mnt-lower: EPOLUDNIE-MP-MNT created: 2022-05-16T06:34:28Z last-modified: 2022-05-16T06:34:28Z 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