These entries are queried from radb.net using whois, you can try my project getting these.
:AS36121 route: 104.255.216.0/22 descr: Nucom Technology, Inc. descr: 2785 Marshall Lake Drive descr: Oakton, VA 22124 descr: US origin: AS36121 mnt-by: MNT-NT-105 changed: shaguo [at] yahoo.com 20150730 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 104.255.216.0/22 origin: AS36121 descr: CHINA NET via EMIX changed: noc [at] emix.net.ae 20181214 #21:48:32Z source: RADB mnt-by: MAINT-AS8966 last-modified: 2023-11-13T15:55:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source