These entries are queried from radb.net using whois, you can try my project getting these.
:AS135104 route: 203.28.58.0/23 origin: AS135104 descr: Catholic Healthcare Ltd Suite 1, Level 5, 15 Talavera Road mnt-by: MAINT-AU-CHC last-modified: 2016-11-23T11:16:09Z source: APNIC rpki-ov-state: valid route: 203.28.58.0/23 descr: Proxy route object registered by AS2764 origin: AS135104 remarks: This route object was created by AAPT on behalf of a customer. remarks: As some of AAPTs upstream networks filter based on IRR objects, remarks: this route object has been created to ensure that the advertisement remarks: of this prefix is not rejected. notify: routing.shared [at] aapt.com.au mnt-by: MAINT-AS2764 changed: nobody [at] aapt.com.au 20180809 source: RADB last-modified: 2023-11-13T16:16:42Z rpki-ov-state: valid route: 203.28.58.0/24 descr: Proxy route object registered by AS2764 origin: AS135104 remarks: This route object was created by AAPT on behalf of a customer. remarks: As some of AAPTs upstream networks filter based on IRR objects, remarks: this route object has been created to ensure that the advertisement remarks: of this prefix is not rejected. notify: routing.shared [at] aapt.com.au mnt-by: MAINT-AS2764 changed: nobody [at] aapt.com.au 20180809 source: RADB last-modified: 2023-11-13T16:16:42Z rpki-ov-state: valid route: 203.28.58.152/29 origin: AS135104 descr: Catholic Healthcare Ltd Suite 1, Level 5, 15 Talavera Road mnt-by: MAINT-AU-CHC last-modified: 2016-11-23T11:21:27Z source: APNIC rpki-ov-state: valid route: 203.28.59.152/29 origin: AS135104 descr: Catholic Healthcare Ltd Suite 1, Level 5, 15 Talavera Road mnt-by: MAINT-AU-CHC last-modified: 2016-11-23T11:21:46Z source: APNIC rpki-ov-state: valid