These entries are queried from radb.net using whois, you can try my project getting these.
:AS135333 route: 45.121.239.0/24 origin: AS135333 descr: Customer: Mekongnet mnt-by: MAINT-AS38082 changed: kittipong_srig [at] trueintergateway.com 20220617 #04:53:26Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: valid route: 45.121.239.0/24 origin: AS135333 descr: AKCTV Pte. Ltd. No. 012, Group 7, Taphul Village Svaydankom Commune Siem Reap province, Cambodia mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2022-06-17T01:00:06Z source: APNIC rpki-ov-state: valid route: 45.121.239.0/24 descr: Proxy-registered route object origin: AS135333 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20220617 source: NTTCOM last-modified: 2022-06-17T23:40:13Z rpki-ov-state: valid route: 103.214.148.0/22 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:09Z source: APNIC rpki-ov-state: valid route: 103.214.148.0/23 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:09Z source: APNIC rpki-ov-state: valid route: 103.214.148.0/24 descr: CAMKOM-KH origin: AS135333 mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:10Z source: APNIC rpki-ov-state: valid route: 103.214.149.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:10Z source: APNIC rpki-ov-state: valid route: 103.214.150.0/23 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:11Z source: APNIC rpki-ov-state: valid route: 103.214.150.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:11Z source: APNIC rpki-ov-state: valid route: 103.214.151.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:11Z source: APNIC rpki-ov-state: valid route: 124.109.16.0/22 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:11Z source: APNIC rpki-ov-state: valid route: 124.109.16.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:12Z source: APNIC rpki-ov-state: valid route: 124.109.17.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:12Z source: APNIC rpki-ov-state: valid route: 124.109.18.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:12Z source: APNIC rpki-ov-state: valid route: 124.109.19.0/24 origin: AS135333 descr: CAMKOM CABLE TV CO, LTD. mnt-by: MAINT-AKCTVPTELTD-KH last-modified: 2021-08-31T06:22:12Z source: APNIC rpki-ov-state: valid