These entries are queried from radb.net using whois, you can try my project getting these.
:AS137545 route: 147.50.30.0/24 origin: AS137545 descr: BB Connect Route Object for Customer (Indorama Petrochem) mnt-by: MAINT-AS45796 changed: apinan_k [at] uih.co.th 20201103 #10:59:49Z source: RADB last-modified: 2023-11-13T16:02:41Z rpki-ov-state: valid route: 223.27.206.0/24 origin: AS137545 descr: BB Connect Route Object for Customer (Indorama Petrochem) mnt-by: MAINT-AS45796 changed: apinan_k [at] uih.co.th 20201103 #10:59:20Z source: RADB last-modified: 2023-11-13T16:02:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source