These entries are queried from radb.net using whois, you can try my project getting these.
:AS138906 route: 103.137.18.0/24 origin: AS138906 descr: Ministry of Culture Network, Thailand mnt-by: MAINT-AS9737 changed: apipolg [at] tot.co.th 20190725 #09:19:54Z source: RADB last-modified: 2023-11-13T15:56:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df0:1580::/48 origin: AS138906 descr: Ministry of Culture Network, Thailand mnt-by: MAINT-AS9737 changed: apipolg [at] tot.co.th 20190725 #09:18:40Z source: RADB last-modified: 2023-11-13T15:56:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source