These entries are queried from radb.net using whois, you can try my project getting these.
:AS50147 route: 31.204.0.0/24 origin: AS50147 mnt-by: MNT-CITY26 created: 2021-07-28T04:44:50Z last-modified: 2021-07-28T04:44:50Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.175.16.0/22 origin: AS50147 mnt-by: MNT-CITY26 created: 2018-04-05T04:23:16Z last-modified: 2018-04-05T04:23:16Z 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