These entries are queried from radb.net using whois, you can try my project getting these.
:AS137440 route: 103.108.218.0/23 descr: Proxy-registered route object origin: AS137440 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 20231002 source: NTTCOM last-modified: 2023-10-02T08:09:08Z rpki-ov-state: valid route: 103.108.218.0/23 descr: Proxy Register for customer origin: AS137440 mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20181024 #10:15:16Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: valid route: 103.108.218.0/23 origin: AS137440 descr: Advanced Bank of Asia Limited N148,Preah Sihanouk Blvd. mnt-by: MAINT-ABABANK-KH last-modified: 2019-11-18T15:25:09Z source: APNIC rpki-ov-state: valid route: 103.108.218.0/24 descr: Proxy-registered route object origin: AS137440 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 20231002 source: NTTCOM last-modified: 2023-10-02T08:09:08Z rpki-ov-state: valid route: 103.108.218.0/24 descr: Proxy Register for customer origin: AS137440 mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20181024 #10:15:37Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: valid route: 103.108.218.0/24 origin: AS137440 descr: Advanced Bank of Asia Limited N148,Preah Sihanouk Blvd. mnt-by: MAINT-ABABANK-KH last-modified: 2019-11-18T15:25:09Z source: APNIC rpki-ov-state: valid route: 103.108.219.0/24 descr: Proxy Register for customer origin: AS137440 mnt-by: MAINT-AS131207 changed: kong.d [at] sinet.com.kh 20181024 #10:15:58Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: valid route: 103.108.219.0/24 origin: AS137440 descr: Advanced Bank of Asia Limited N148,Preah Sihanouk Blvd. mnt-by: MAINT-ABABANK-KH last-modified: 2019-11-18T15:25:09Z source: APNIC rpki-ov-state: valid route: 103.108.219.0/24 descr: Proxy-registered route object origin: AS137440 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 20231002 source: NTTCOM last-modified: 2023-10-02T08:09:08Z rpki-ov-state: valid