These entries are queried from radb.net using whois, you can try my project getting these.
:AS328427 route: 102.68.136.0/22 descr: AirLink Broadband Limited origin: AS328427 mnt-by: ABL1-MNT changed: *** [at] airlinkzambia.com 20190607 source: AFRINIC rpki-ov-state: valid route: 102.68.136.0/24 descr: AirLink Broadband Limited origin: AS328427 mnt-by: ABL1-MNT changed: *** [at] gmail.com 20190207 source: AFRINIC rpki-ov-state: valid route: 102.68.137.0/24 descr: AirLink Broadband Limited origin: AS328427 mnt-by: ABL1-MNT changed: *** [at] gmail.com 20190207 source: AFRINIC rpki-ov-state: valid route: 102.68.138.0/24 descr: AirLink Broadband Limited origin: AS328427 mnt-by: ABL1-MNT changed: *** [at] gmail.com 20190207 source: AFRINIC rpki-ov-state: valid route: 102.68.139.0/24 descr: AirLink Broadband Limited origin: AS328427 mnt-by: ABL1-MNT changed: *** [at] gmail.com 20190207 source: AFRINIC rpki-ov-state: valid