These entries are queried from radb.net using whois, you can try my project getting these.
:AS131257 route: 202.29.18.0/24 descr: Surathani Rajabhat University origin: AS131257 notify: noc [at] uni.net.th notify: thianchai [at] sru.ac.th mnt-by: MAINT-AS4621 changed: tawee [at] uni.net.th 20121101 #10:31:48Z source: RADB last-modified: 2023-11-13T15:55:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source