These entries are queried from radb.net using whois, you can try my project getting these.
:AS45847 route: 202.29.33.0/24 descr: Nakhon Si Thammarat Rajabhat University origin: AS45847 notify: noc [at] uni.net.th notify: watcharapong_x [at] nstru.ac.th notify: somboonrint [at] hotmail.com mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20090718 source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source