These entries are queried from radb.net using whois, you can try my project getting these.
:AS50737 route: 193.105.111.0/24 descr: ASR Nederland origin: AS50737 org: ORG-ANN2-RIPE notify: ripe [at] asr.nl mnt-lower: ASR-MNT mnt-routes: ASR-MNT mnt-by: ASR-MNT created: 2010-03-17T16:08:20Z last-modified: 2010-03-17T16:08:20Z 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: valid route6: 2a03:4740::/32 origin: AS50737 mnt-by: ASR-MNT created: 2019-11-21T12:25:37Z last-modified: 2019-11-21T12:25:37Z 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