These entries are queried from radb.net using whois, you can try my project getting these.
:AS47937 route6: 2001:678:c70::/48 descr: Tassilo Schweyer origin: AS47937 mnt-by: WELTERDE-MNT created: 2020-03-12T19:09:48Z last-modified: 2022-06-28T20:44:01Z 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: 2001:678:c70::/48 descr: Vultr Customer Route origin: AS47937 notify: network [at] choopa.com mnt-by: MAINT-AS20473 changed: network [at] choopa.com 20221210 #00:37:42-18000 source: RADB last-modified: 2023-11-13T16:13:12Z rpki-ov-state: valid