These entries are queried from radb.net using whois, you can try my project getting these.
:AS138353 route: 103.131.35.0/24 origin: AS138353 descr: BB Connect Route Object for Customer (NIST International School) notify: peering [at] bbconnect.co.th changed: apinan_k [at] uih.co.th 20181211 #06:41:31Z source: RADB mnt-by: MAINT-AS45796 last-modified: 2023-11-13T15:55:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source