These entries are queried from radb.net using whois, you can try my project getting these.
:AS204254 route6: 2001:67c:754::/48 descr: NevaKee.de origin: AS204254 mnt-by: HUEBEL-MNT created: 2015-07-16T14:46:28Z last-modified: 2020-04-04T21:03:30Z 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: 2001:67c:758::/48 descr: NevaKee.de origin: AS204254 mnt-by: HUEBEL-MNT created: 2015-07-16T16:09:26Z last-modified: 2020-04-04T21:03:21Z 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: 2001:67c:75c::/48 descr: NevaKee.de origin: AS204254 mnt-by: HUEBEL-MNT created: 2015-07-17T17:54:27Z last-modified: 2020-04-04T21:03:11Z 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: 2a00:f826:a::/48 descr: NevaKee.de - IP-Routing origin: AS204254 mnt-by: HUEBEL-MNT created: 2015-07-16T17:32:30Z last-modified: 2015-07-16T17:32:30Z 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: 2a07:6fc6::/32 descr: NevaKee.de origin: AS204254 mnt-by: HUEBEL-MNT created: 2018-04-24T12:10:32Z last-modified: 2020-04-04T21:03:50Z 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: valid