These entries are queried from radb.net using whois, you can try my project getting these.
:AS52144 route: 185.247.152.0/22 origin: AS52144 mnt-by: nl-mybit-1-mnt created: 2018-03-27T13:39:31Z last-modified: 2022-05-04T11:35:12Z 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: 195.20.144.0/24 descr: MyBit B.V. origin: AS52144 mnt-lower: nl-mybit-1-mnt mnt-routes: nl-mybit-1-mnt mnt-by: nl-mybit-1-mnt created: 2011-01-06T15:09:49Z last-modified: 2020-08-03T16:23:58Z 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:e100::/29 origin: AS52144 mnt-routes: OPENPEERING-MNT mnt-by: nl-mybit-1-mnt created: 2018-03-27T13:40:14Z last-modified: 2018-03-27T13:40:14Z 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