These entries are queried from radb.net using whois, you can try my project getting these.
:AS16873 route: 12.29.42.0/24 descr: Hart Systems origin: AS16873 mnt-by: MAINT-AS27506 changed: dcasteel [at] lightower.com 20151109 source: RADB last-modified: 2023-11-13T15:48:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.38.173.0/24 descr: HART SYSTEMS INC origin: AS16873 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190214 #19:39:41Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source