These entries are queried from radb.net using whois, you can try my project getting these.
:AS17768 route: 203.11.159.0/24 descr: NSW Department of Mineral Resources (7326) origin: AS17768 remarks: Do not use the notify or changed attribute to report incidents. remarks: Check the inetnum object at the regional registries for contact remarks: information (dereference the admin-c & tech-c attributes). notify: routing [at] connect.com.au mnt-by: MAINT-AS2764 changed: nobody [at] connect.com.au 20110316 source: RADB last-modified: 2023-11-13T16:16:04Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.13.236.0/24 descr: NEXTGENNET AS AU NextGen.Net Application Service Provider origin: AS17768 mnt-by: MAINT-AS7545 changed: rony.jalova [at] tpg.com.au 20110609 #08:28:11Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.18.146.0/23 descr: NextGen.Net origin: AS17768 mnt-by: MAINT-AS7474 changed: noc [at] optus.net.au 20060122 source: RADB last-modified: 2023-11-13T16:05:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.18.146.0/24 descr: NextGen.Net origin: AS17768 mnt-by: MAINT-AS7474 changed: noc [at] optus.net.au 20060122 source: RADB last-modified: 2023-11-13T16:05:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.18.147.0/24 descr: NextGen.Net origin: AS17768 mnt-by: MAINT-AS7474 changed: noc [at] optus.net.au 20060122 source: RADB last-modified: 2023-11-13T16:05:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.55.165.0/24 descr: Nextgen origin: AS17768 mnt-by: MAINT-AS7474 changed: routing [at] cwo.net.au 20010619 source: RADB last-modified: 2023-11-13T16:03:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source