These entries are queried from radb.net using whois, you can try my project getting these.
:AS150381 route: 103.24.18.0/23 descr: Cust:Mekongnet origin: AS150381 mnt-by: MAINT-AS38082 changed: irradmin [at] irr.trueintergateway.com 20240117 source: RADB last-modified: 2024-01-17T11:50:55Z rpki-ov-state: valid route: 103.24.18.0/23 origin: AS150381 descr: VENUS BROADBAND (CAMBODIA) PLC 606, Village 9, Sangkat Boeung Kak II, Khan Toul Kork, Phnom mnt-by: MAINT-VBP-KH last-modified: 2023-04-03T07:35:58Z source: APNIC rpki-ov-state: valid route: 103.24.18.0/24 descr: CAT route object for JASTEL-NETWORK-TH-NIX-AP origin: AS150381 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20230222 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: valid route: 103.24.18.0/24 origin: AS150381 descr: VENUS BROADBAND (CAMBODIA) PLC 606, Village 9, Sangkat Boeung Kak II, Khan Toul Kork, Phnom mnt-by: MAINT-VBP-KH last-modified: 2023-04-03T07:35:59Z source: APNIC rpki-ov-state: valid route: 103.24.19.0/24 descr: CAT route object for JASTEL-NETWORK-TH-NIX-AP origin: AS150381 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20230222 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: valid route: 103.24.19.0/24 origin: AS150381 descr: VENUS BROADBAND (CAMBODIA) PLC 606, Village 9, Sangkat Boeung Kak II, Khan Toul Kork, Phnom mnt-by: MAINT-VBP-KH last-modified: 2023-04-03T07:36:00Z source: APNIC rpki-ov-state: valid