These entries are queried from radb.net using whois, you can try my project getting these.
:AS199937 route: 185.42.68.0/22 descr: ANWB B.V. prefix1 origin: AS199937 mnt-by: MNT-ANWB created: 2014-03-05T13:59:20Z last-modified: 2014-03-05T13:59:20Z 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 route: 185.42.68.0/23 descr: ANWB B.V. prefix2 origin: AS199937 mnt-by: MNT-ANWB created: 2014-03-05T14:04:21Z last-modified: 2014-03-05T14:04:21Z 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: 185.42.71.0/24 descr: ANWB B.V. prefix3 origin: AS199937 mnt-by: MNT-ANWB created: 2019-09-24T15:12:21Z last-modified: 2019-09-24T15:12:21Z 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: 2a04:8e80::/48 descr: ANWB-BV_BRDR origin: AS199937 mnt-by: MNT-ANWB created: 2014-03-20T08:55:59Z last-modified: 2014-03-20T08:55:59Z 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