These entries are queried from radb.net using whois, you can try my project getting these.
:AS22572 route: 66.18.64.0/19 org: ORG-SSL47-RIPE notify: netadmin [at] sentech.co.za descr: Sentech SoC Ltd - SA Routes origin: AS22572 mnt-by: JMMN7-RIPE created: 2014-11-20T06:38:49Z last-modified: 2019-06-11T13:48:40Z source: RIPE-NONAUTH 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: 66.18.64.0/20 origin: AS22572 descr: Sentech SoC Ltd mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20220617 source: AFRINIC notify: *** [at] sentech.co.za rpki-ov-state: valid route: 66.18.80.0/21 descr: Sentech SOC Ltd SA Routes II origin: AS22572 notify: *** [at] sentech.co.za mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20180904 source: AFRINIC rpki-ov-state: valid route: 66.18.80.0/21 org: ORG-SSL47-RIPE notify: netadmin [at] sentech.co.za descr: Sentech SOC Ltd SA Routes II origin: AS22572 mnt-by: JMMN7-RIPE created: 2014-11-19T13:09:17Z last-modified: 2018-09-04T18:01:37Z source: RIPE-NONAUTH 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: 66.18.88.0/22 descr: Sentech SOC Ltd SA VSAT Routes origin: AS22572 notify: *** [at] sentech.co.za mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20180904 source: AFRINIC rpki-ov-state: valid route: 66.18.88.0/22 notify: netadmin [at] sentech.co.za org: ORG-SSL47-RIPE descr: Sentech SOC Ltd SA VSAT Routes origin: AS22572 mnt-by: JMMN7-RIPE created: 2014-11-19T13:11:15Z last-modified: 2018-09-04T18:01:38Z source: RIPE-NONAUTH 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: 66.18.92.0/23 descr: Sentech SOC Ltd SA VSAT Routes II origin: AS22572 notify: *** [at] sentech.co.za mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20180904 source: AFRINIC rpki-ov-state: valid route: 66.18.92.0/23 notify: netadmin [at] sentech.co.za org: ORG-SSL47-RIPE descr: Sentech SOC Ltd SA VSAT Routes II origin: AS22572 mnt-by: JMMN7-RIPE created: 2014-11-19T13:12:37Z last-modified: 2018-09-04T18:01:38Z source: RIPE-NONAUTH 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: 66.18.94.0/24 descr: Sentech SOC Ltd SA VSAT Routes III origin: AS22572 notify: *** [at] sentech.co.za mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20180904 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.18.94.0/24 org: ORG-SSL47-RIPE notify: netadmin [at] sentech.co.za descr: Sentech SOC Ltd SA VSAT Routes III origin: AS22572 mnt-by: JMMN7-RIPE created: 2014-11-19T13:13:45Z last-modified: 2018-09-04T18:01:38Z source: RIPE-NONAUTH 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 route6: 2c0f:e9e0::/32 origin: AS22572 descr: SENTECH-ZA-V6 mnt-by: AFRINIC-JM7-MNT changed: *** [at] sentech.co.za 20201029 source: AFRINIC rpki-ov-state: valid