These entries are queried from radb.net using whois, you can try my project getting these.
:AS37932 route: 203.158.192.0/20 descr: Rajamangala University of Technology Isan network origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20180427 #04:09:10Z 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: 203.158.192.0/22 descr: Rajamangala University of Technology Isan network (Nakornratchasima Campus) origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20180427 #04:10:49Z 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: 203.158.192.0/24 descr: Rajamangala University of Technology Isan,Thailand origin: AS37932 mnt-by: MAINT-AS45758 changed: hatmans [at] gmail.com 20111005 #08:57:40Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.193.0/24 descr: Rajamangala University of Technology Isan,Thailand origin: AS37932 mnt-by: MAINT-AS45758 changed: hatmans [at] gmail.com 20111005 #08:58:25Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.194.0/24 descr: Rajamangala University of Technology Isan,Thailand origin: AS37932 mnt-by: MAINT-AS45758 changed: hatmans [at] gmail.com 20111005 #08:59:18Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.195.0/24 descr: Rajamangala University of Technology Isan,Thailand origin: AS37932 mnt-by: MAINT-AS45758 changed: hatmans [at] gmail.com 20111005 #09:00:10Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.196.0/23 descr: Rajamangala University of Technology Isan network (Nakornratchasima Campus) origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20120926 #11:28:21Z 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: 203.158.196.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.197.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.198.0/23 descr: Rajamangala University of Technology Isan network (Surin Campus) origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20180427 #04:12:33Z 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: 203.158.198.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.199.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.200.0/22 descr: Rajamangala University of Technology Isan network (Khonkean Campus) origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20180427 #04:23:31Z 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: 203.158.200.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.201.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.202.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.203.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.204.0/23 descr: Rajamangala University of Technology Isan network (Sakonnakorn Campus) origin: AS37932 notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20180427 #04:12:57Z 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: 203.158.204.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.205.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.206.0/23 origin: AS37932 descr: Rajamangala University of Technology Isan network (Nakornratchasima Campus) notify: noc [at] rmuti.ac.th notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: kriengsak [at] uni.net.th 20190307 #03:18:34Z 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: 203.158.206.0/24 descr: CAT route object for UniNet origin: AS37932 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20220628 source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.158.207.0/24 descr: Rajamangala University of Technology Isan,Thailand origin: AS37932 mnt-by: MAINT-AS45758 changed: hatmans [at] gmail.com 20111005 #09:00:47Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:3c8:c305::/48 origin: AS37932 descr: Rajamangala University of Technology Isan network (Nakornratchasima Campus) admin-c: UNOC1-AP tech-c: UNOC1-AP notify: noc [at] uni.net.th notify: Chaiwat.d [at] rmuti.ac.th mnt-by: MAINT-AS4621 changed: kriengsak [at] uni.net.th 20190307 #03:22:56Z source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source