These entries are queried from radb.net using whois, you can try my project getting these.
:AS47838 route: 88.216.8.0/21 descr: NTT-DATA-SOCIUS origin: AS47838 mnt-by: MNT-NTT-LIR created: 2020-02-25T06:51:54Z last-modified: 2020-02-25T06:51:54Z 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 route: 88.216.72.0/22 descr: NTT-DATA-SOCIUS origin: AS47838 mnt-by: MNT-NTT-LIR created: 2020-02-25T06:53:31Z last-modified: 2020-02-25T06:53:31Z 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 route: 88.216.192.0/22 descr: NTT-DATA-SOCIUS origin: AS47838 mnt-by: MNT-NTT-LIR created: 2020-02-25T06:57:40Z last-modified: 2020-02-26T12:04:11Z 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: not_found # No ROAs found, or RPKI validation not enabled for source