These entries are queried from radb.net using whois, you can try my project getting these.
:AS396302 route: 23.156.160.0/24 descr: YYC Net Lab origin: AS396302 mnt-by: MNT-AL-770 changed: mark [at] yycnetlab.org 20181030 source: ARIN rpki-ov-state: valid route6: 2604:4140::/32 descr: YYC Net Lab origin: AS396302 mnt-by: MNT-AL-770 changed: mark [at] yycnetlab.org 20180828 source: ARIN rpki-ov-state: valid