These entries are queried from radb.net using whois, you can try my project getting these.
:AS205603 route6: 2a0b:2542:400::/40 descr: Wolf Network Lab origin: AS205603 mnt-by: WOLFLAB-MNT created: 2022-12-01T12:45:29Z last-modified: 2022-12-01T12:45:29Z 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: 2a0b:2542:400::/40 descr: Wolf Network Lab origin: AS205603 mnt-by: MAINT-WOLFLAB source: NTTCOM last-modified: 2022-12-01T13:01:20Z rpki-ov-state: valid route6: 2a0b:4340:6::/48 descr: Wolf Network Lab Backbone origin: AS205603 mnt-by: WOLFLAB-MNT created: 2020-09-12T13:00:22Z last-modified: 2020-09-12T13:00:22Z 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: 2a0b:4340:6::/48 descr: Wolf Network Lab Backbone origin: AS205603 mnt-by: MAINT-WOLFLAB source: NTTCOM last-modified: 2022-05-08T03:16:31Z rpki-ov-state: valid route6: 2a0b:4340:6::/48 descr: ShimaneDatacenterClubCustomerRoute X-Keiro:thinnw.jpirr-alert [at] mail1.softether.co.jp origin: AS205603 notify: thinnw.jpirr-notify [at] mail1.softether.co.jp mnt-by: MAINT-AS150363 changed: irr-admin [at] nic.ad.jp 20231129 source: JPIRR rpki-ov-state: valid route6: 2a0b:4340:60::/44 descr: Wolf Network Lab origin: AS205603 mnt-by: MAINT-AS9312 changed: david [at] xtom.com 20180805 #13:56:38Z source: RADB last-modified: 2023-11-13T15:54:24Z rpki-ov-state: valid route6: 2a0b:4340:60::/44 descr: Wolf Network Lab origin: AS205603 mnt-by: WOLFLAB-MNT created: 2017-07-15T05:48:55Z last-modified: 2018-07-12T11:27:46Z 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: 2a0b:4340:60::/44 descr: Wolf Network Lab origin: AS205603 mnt-by: MAINT-WOLFLAB source: NTTCOM last-modified: 2022-05-08T03:16:31Z rpki-ov-state: valid route6: 2a0b:4340:60::/44 descr: ShimaneDatacenterClubCustomerRoute X-Keiro:thinnw.jpirr-alert [at] mail1.softether.co.jp origin: AS205603 notify: thinnw.jpirr-notify [at] mail1.softether.co.jp mnt-by: MAINT-AS150363 changed: irr-admin [at] nic.ad.jp 20231129 source: JPIRR rpki-ov-state: valid