These entries are queried from radb.net using whois, you can try my project getting these.
:AS62988 route: 204.17.178.0/24 descr: Art Center College of Design origin: AS62988 notify: yadong [at] usc.edu notify: ypyun [at] usc.edu remarks: Proxy-registered route object mnt-by: MAINT-AS226 changed: yadong [at] usc.edu 20200629 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.117.149.0/24 descr: Art Center College of Design origin: AS62988 notify: yadong [at] usc.edu notify: ypyun [at] usc.edu remarks: Proxy-registered route object mnt-by: MAINT-AS226 changed: yadong [at] usc.edu 20200629 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.117.150.0/24 descr: Art Center College of Design origin: AS62988 notify: yadong [at] usc.edu notify: ypyun [at] usc.edu remarks: Proxy-registered route object mnt-by: MAINT-AS226 changed: yadong [at] usc.edu 20200629 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source