These entries are queried from radb.net using whois, you can try my project getting these.
:AS208751 route: 45.135.151.0/24 origin: AS208751 mnt-by: MG-mnt created: 2019-08-26T09:16:28Z last-modified: 2019-08-26T09:16:28Z 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: 2a06:e881:6700::/44 origin: AS208751 mnt-by: MG-mnt created: 2019-06-11T17:21:18Z last-modified: 2019-06-11T17:21:18Z 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: 2a0e:b107:370::/44 origin: AS208751 mnt-by: MG-mnt created: 2019-12-19T12:53:20Z last-modified: 2019-12-19T12:53:20Z 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