These entries are queried from radb.net using whois, you can try my project getting these.
:AS21488 route: 91.196.156.0/22 descr: RNC Ltd, Kiev, Ukraine origin: AS21488 mnt-by: EMPLOT-MNT mnt-by: RNC-MNT created: 2008-09-17T07:06:19Z last-modified: 2011-02-22T11:28:43Z 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: 193.110.106.0/23 descr: Emplot Ltd descr: Kiev, Ukraine origin: AS21488 mnt-by: EMPLOT-MNT created: 2002-01-09T12:36:54Z last-modified: 2002-01-09T12:36:54Z 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: 194.246.116.0/23 descr: Emplot Ltd. origin: AS21488 mnt-by: EMPLOT-MNT created: 2004-02-11T14:55:00Z last-modified: 2004-02-11T14:55:00Z 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: 217.66.96.0/21 origin: AS21488 mnt-by: EMPLOT-MNT created: 2019-11-20T13:04:20Z last-modified: 2019-11-20T13:04:20Z 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 route: 217.66.104.0/21 origin: AS21488 mnt-by: EMPLOT-MNT created: 2020-07-23T11:11:41Z last-modified: 2020-07-23T11:11:41Z 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: 2a0f:c240::/29 origin: AS21488 mnt-by: EMPLOT-MNT created: 2019-12-05T06:53:45Z last-modified: 2019-12-05T06:53:45Z 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