These entries are queried from radb.net using whois, you can try my project getting these.
:AS38296 route: 203.151.104.0/24 descr: NSTDA-TH origin: AS38296 mnt-by: MAINT-AS4618 changed: yterayut [at] gmail.com 20180704 #06:54:10Z source: RADB last-modified: 2023-11-13T15:54:02Z rpki-ov-state: valid route: 203.151.104.0/24 origin: AS38296 descr: Internet Thailand Company Ltd. 1768 IFCT Tower, 10th-12th FL IT Floor New Petchburi Road Khwaeng Bang Kapi Khet Huay Khwang mnt-by: MAINT-TH-INET last-modified: 2020-11-19T08:19:34Z source: APNIC rpki-ov-state: valid route: 203.151.105.0/24 origin: AS38296 descr: Internet Thailand Company Ltd. 1768 IFCT Tower, 10th-12th FL IT Floor New Petchburi Road Khwaeng Bang Kapi Khet Huay Khwang mnt-by: MAINT-TH-INET last-modified: 2020-11-19T08:19:36Z source: APNIC rpki-ov-state: valid route: 203.151.105.0/24 descr: NSTDA-TH origin: AS38296 mnt-by: MAINT-AS4618 changed: yterayut [at] gmail.com 20180704 #06:54:31Z source: RADB last-modified: 2023-11-13T15:54:02Z rpki-ov-state: valid route: 203.185.129.0/24 descr: CAT route object for NSTDA origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20061215 source: RADB last-modified: 2023-11-13T15:45:08Z rpki-ov-state: valid route: 203.185.129.0/24 descr: Trans for AS9737 origin: AS38296 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20090821 source: NTTCOM rpki-ov-state: valid route: 203.185.129.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:14:35Z source: APNIC rpki-ov-state: valid route: 203.185.130.0/23 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:14:50Z source: APNIC rpki-ov-state: valid route: 203.185.130.0/23 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20221003 source: RADB last-modified: 2023-11-13T16:12:32Z rpki-ov-state: valid route: 203.185.130.0/24 origin: AS38296 descr: National Science and Technology Development Agency mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:50:38Z source: APNIC rpki-ov-state: valid route: 203.185.130.0/24 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20230308 source: RADB last-modified: 2023-11-13T16:15:22Z rpki-ov-state: valid route: 203.185.131.0/24 descr: CAT route object for NSTDA origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20061215 source: RADB last-modified: 2023-11-13T15:45:08Z rpki-ov-state: valid route: 203.185.131.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:15:47Z source: APNIC rpki-ov-state: valid route: 203.185.131.0/24 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20100226 source: NTTCOM rpki-ov-state: valid route: 203.185.132.0/22 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:15:26Z source: APNIC rpki-ov-state: valid route: 203.185.132.0/22 descr: CAT route object for NSTDA origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20061215 source: RADB last-modified: 2023-11-13T15:45:08Z rpki-ov-state: valid route: 203.185.132.0/22 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20100226 source: NTTCOM rpki-ov-state: valid route: 203.185.132.0/23 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:15:12Z source: APNIC rpki-ov-state: valid route: 203.185.132.0/23 descr: Proxy-registered route object origin: AS38296 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20100226 source: RADB last-modified: 2023-11-13T15:40:57Z rpki-ov-state: valid route: 203.185.132.0/23 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20100226 source: NTTCOM rpki-ov-state: valid route: 203.185.132.0/24 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20100226 source: NTTCOM rpki-ov-state: valid route: 203.185.132.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:15:04Z source: APNIC rpki-ov-state: valid route: 203.185.132.0/24 descr: NSTDA origin: AS38296 mnt-by: MAINT-AS7470 changed: prakaykiat_pai [at] trueinternet.co.th 20141002 #09:06:26Z source: RADB last-modified: 2023-11-13T15:46:41Z rpki-ov-state: valid route: 203.185.133.0/24 descr: Trans for AS9737 origin: AS38296 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20090821 source: NTTCOM rpki-ov-state: valid route: 203.185.133.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:15:18Z source: APNIC rpki-ov-state: valid route: 203.185.133.0/24 descr: NSTDA origin: AS38296 mnt-by: MAINT-AS7470 changed: prakaykiat_pai [at] trueinternet.co.th 20141002 #09:07:16Z source: RADB last-modified: 2023-11-13T15:46:41Z rpki-ov-state: valid route: 203.185.134.0/23 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:15:42Z source: APNIC rpki-ov-state: valid route: 203.185.134.0/23 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20221003 source: RADB last-modified: 2023-11-13T16:12:32Z rpki-ov-state: valid route: 203.185.134.0/24 descr: Trans for AS9737 origin: AS38296 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20090821 source: NTTCOM rpki-ov-state: valid route: 203.185.134.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:14:49Z source: APNIC rpki-ov-state: valid route: 203.185.134.0/24 descr: NSTDA origin: AS38296 mnt-by: MAINT-AS7470 changed: prakaykiat_pai [at] trueinternet.co.th 20141002 #09:08:15Z source: RADB last-modified: 2023-11-13T15:46:41Z rpki-ov-state: valid route: 203.185.135.0/24 descr: Trans for AS9737 origin: AS38296 remarks: admin contact mail to ipnoc [at] telekommalaysia.com.hk remarks: tech contact mail to ipnoc [at] telekommalaysia.com.hk notify: ipnoc [at] telekommalaysia.com.hk mnt-by: MAINT-TMHKNTT changed: ipnoc [at] telekommalaysia.com.hk 20090821 source: NTTCOM rpki-ov-state: valid route: 203.185.135.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:15:33Z source: APNIC rpki-ov-state: valid route: 203.185.135.0/24 descr: NSTDA origin: AS38296 mnt-by: MAINT-AS7470 changed: prakaykiat_pai [at] trueinternet.co.th 20141002 #09:09:01Z source: RADB last-modified: 2023-11-13T15:46:41Z rpki-ov-state: valid route: 203.185.136.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:17:10Z source: APNIC rpki-ov-state: valid route: 203.185.137.0/24 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20200624 source: NTTCOM rpki-ov-state: valid route: 203.185.137.0/24 origin: AS38296 descr: National Science and Technology Development Agency mnt-by: MAINT-NECTEC-AP last-modified: 2022-09-13T09:51:28Z source: APNIC rpki-ov-state: valid route: 203.185.137.0/24 descr: CAT route object for CAT Telecom origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20170717 source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: valid route: 203.185.138.0/24 descr: CAT route object for NSTDA origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: surachai [at] cat.net.th 20170716 source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: valid route: 203.185.138.0/24 descr: Proxy-registered route object origin: AS38296 remarks: This is a HGC customer route-object remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found. remarks: remarks: Please contact radb [at] hutchcity.com if you have any remarks: questions regarding this object. notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20200624 source: NTTCOM rpki-ov-state: valid route: 203.185.138.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:16:15Z source: APNIC rpki-ov-state: valid route: 203.185.139.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:17:35Z source: APNIC rpki-ov-state: valid route: 203.185.140.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T04:21:47Z source: APNIC rpki-ov-state: valid route: 203.185.141.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T14:28:11Z source: APNIC rpki-ov-state: valid route: 203.185.142.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T14:28:33Z source: APNIC rpki-ov-state: valid route: 203.185.143.0/24 origin: AS38296 descr: National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 mnt-by: MAINT-NECTEC-AP last-modified: 2022-07-21T14:28:56Z source: APNIC rpki-ov-state: valid route: 203.185.144.0/23 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2022-08-05T07:58:39Z source: APNIC rpki-ov-state: valid route: 203.185.144.0/23 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20220804 source: RADB last-modified: 2023-11-13T16:12:04Z rpki-ov-state: valid route: 203.185.144.0/24 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2023-02-01T14:46:07Z source: APNIC rpki-ov-state: valid route: 203.185.144.0/24 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20220804 source: RADB last-modified: 2023-11-13T16:12:04Z rpki-ov-state: valid route: 203.185.145.0/24 descr: CAT route object for AS38296 origin: AS38296 mnt-by: MAINT-THIX-CAT-TH changed: niaeda [at] cat.net.th 20220804 source: RADB last-modified: 2023-11-13T16:12:04Z rpki-ov-state: valid route: 203.185.145.0/24 descr: National Science and Technology Development Agency origin: AS38296 mnt-by: MAINT-NECTEC-AP last-modified: 2023-02-01T14:46:19Z source: APNIC rpki-ov-state: valid