These entries are queried from radb.net using whois, you can try my project getting these.
:AS38589 route: 202.21.149.0/24 descr: CAT route object for NIDA origin: AS38589 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20080820 source: RADB last-modified: 2023-11-13T15:45:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.28.16.0/24 descr: NIDA Network Thailand Via UniNet origin: AS38589 notify: noc-uninet [at] it.chula.ac.th notify: noc [at] uni.net.th notify: kasima [at] nida.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20020821 changed: tawee [at] uni.net.th 20080822 source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.29.108.0/23 descr: PACNET (proxy-registered route object) origin: AS38589 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some PACNET peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net if you have any Concerns regarding Spam/Abuses related to this object + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20100201 source: RADB last-modified: 2023-11-13T15:58:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.29.108.0/24 descr: NIDA (UniNet's Member) origin: AS38589 notify: noc [at] uni.net.th notify: sutticha [at] nida.ac.th notify: kasima [at] nida.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20080826 source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.29.109.0/24 descr: NIDA (UniNet's Member) origin: AS38589 notify: noc [at] uni.net.th notify: sutticha [at] nida.ac.th notify: kasima [at] nida.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20080826 source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.44.72.0/24 descr: CAT route object for NIDA origin: AS38589 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20080820 source: RADB last-modified: 2023-11-13T15:45:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.44.73.0/24 descr: CAT route object for NIDA origin: AS38589 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20080820 source: RADB last-modified: 2023-11-13T15:45:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:3c8:1601::/48 origin: AS38589 descr: Network of National Institute of Development Administration (NIDA) notify: noc [at] uni.net.th mnt-by: MAINT-AS4621 changed: kriengsak [at] uni.net.th 20191122 #08:46:23Z source: RADB last-modified: 2023-11-13T15:58:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source