These entries are queried from radb.net using whois, you can try my project getting these.
:AS58598 route: 103.9.88.0/22 descr: Proxy-registered route object origin: AS58598 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20121223 source: RADB last-modified: 2023-11-13T15:44:30Z rpki-ov-state: valid route: 103.9.88.0/22 descr: Comtel net origin: AS58598 country: MN remarks: Whole comtel network mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:10Z source: APNIC rpki-ov-state: valid route: 103.9.88.0/24 descr: Network for fist /24 origin: AS58598 country: MN mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:10Z source: APNIC rpki-ov-state: valid route: 103.9.88.0/24 descr: Proxy-registered route object origin: AS58598 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20121223 source: RADB last-modified: 2023-11-13T15:44:30Z rpki-ov-state: valid route: 103.9.89.0/24 descr: second /24 network origin: AS58598 mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:08Z source: APNIC rpki-ov-state: valid route: 103.9.89.0/24 descr: Proxy-registered route object origin: AS58598 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20121223 source: RADB last-modified: 2023-11-13T15:44:30Z rpki-ov-state: valid route: 103.9.90.0/24 descr: Proxy-registered route object origin: AS58598 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20121223 source: RADB last-modified: 2023-11-13T15:44:30Z rpki-ov-state: valid route: 103.9.90.0/24 descr: 3rd /24 network origin: AS58598 mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:10Z source: APNIC rpki-ov-state: valid route: 103.9.91.0/24 descr: 4th /24 network origin: AS58598 mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:10Z source: APNIC rpki-ov-state: valid route: 103.9.91.0/24 descr: Proxy-registered route object origin: AS58598 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20121223 source: RADB last-modified: 2023-11-13T15:44:30Z rpki-ov-state: valid route6: 2403:d700::/32 descr: Comtel IPv6 whole network origin: AS58598 mnt-lower: MAINT-COMTEL-NET-MN mnt-routes: MAINT-COMTEL-NET-MN mnt-by: MAINT-COMTEL-NET-MN last-modified: 2014-08-15T07:15:08Z source: APNIC rpki-ov-state: valid