These entries are queried from radb.net using whois, you can try my project getting these.
:AS149294 route: 103.178.18.0/23 descr: Chaktomuk Data Center origin: AS149294 mnt-by: MAINT-CDCCL-KH last-modified: 2022-04-06T08:40:15Z source: APNIC rpki-ov-state: valid route: 103.178.18.0/24 descr: Chaktomuk Data Center origin: AS149294 mnt-by: MAINT-CDCCL-KH last-modified: 2022-04-06T08:39:08Z source: APNIC rpki-ov-state: valid route: 103.178.18.0/24 origin: AS149294 descr: Chaktomuk Data Center mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20220406 #05:14:30Z source: RADB last-modified: 2023-11-13T16:10:49Z rpki-ov-state: valid route: 103.178.19.0/24 descr: Chaktomuk Data Center origin: AS149294 mnt-by: MAINT-CDCCL-KH last-modified: 2022-04-06T08:39:16Z source: APNIC rpki-ov-state: valid route: 103.178.19.0/24 origin: AS149294 descr: Chaktomuk Data Center mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20220406 #05:15:15Z source: RADB last-modified: 2023-11-13T16:10:49Z rpki-ov-state: valid route6: 2400:3ee0::/32 origin: AS149294 descr: Chaktomuk Data Center mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20220406 #07:06:20Z source: RADB last-modified: 2023-11-13T16:10:49Z rpki-ov-state: valid route6: 2400:3ee0::/32 descr: Chaktomuk Data Center origin: AS149294 mnt-by: MAINT-CDCCL-KH last-modified: 2022-04-06T08:40:47Z source: APNIC rpki-ov-state: valid route6: 2400:3ee0::/48 origin: AS149294 descr: CHAKTOMUK DATA CENTER CO. LTD. 24K STREET 598 mnt-by: MAINT-CDCCL-KH last-modified: 2023-11-06T07:09:15Z source: APNIC rpki-ov-state: valid route6: 2400:3ee0:1::/48 origin: AS149294 descr: CHAKTOMUK DATA CENTER CO. LTD. 24K STREET 598 mnt-by: MAINT-CDCCL-KH last-modified: 2023-11-06T07:09:15Z source: APNIC rpki-ov-state: valid