These entries are queried from radb.net using whois, you can try my project getting these.
:AS31371 route: 91.204.4.0/22 descr: Wissenschaftsladen Dortmund e.V. origin: AS31371 org: ORG-WA21-RIPE notify: admin [at] xs4free.net mnt-routes: FREE-MNT mnt-routes: FAUL-MNT mnt-routes: IACD-MNT mnt-by: FREE-MNT mnt-by: FAUL-MNT mnt-by: IACD-MNT created: 2008-05-24T11:23:27Z last-modified: 2008-05-24T11:23:27Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.204.7.0/24 descr: Wissenschaftsladen Dortmund e.V. Labornetz origin: AS31371 org: ORG-WA21-RIPE mnt-by: FREE-MNT created: 2019-04-24T20:58:50Z last-modified: 2019-04-24T20:58:50Z 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: 2001:678:98c::/48 descr: Wissenschaftsladen Dortmund e.V. origin: AS31371 org: ORG-WA21-RIPE mnt-by: FREE-MNT created: 2019-05-10T15:49:18Z last-modified: 2019-05-10T15:49:18Z 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