These entries are queried from radb.net using whois, you can try my project getting these.
:AS19793 route: 199.184.211.0/24 origin: AS19793 descr: R Systems NA, Inc. 1906 Fox Drive Suite C Champaign IL 61820 United States admin-c: RHPCA-ARIN tech-c: TECH845-ARIN mnt-by: MNT-RSN-10 created: 2021-02-14T06:47:46Z last-modified: 2021-02-14T06:47:46Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.184.211.0/24 descr: R-Systems origin: AS19793 mnt-by: MAINT-CCI changed: do-not-reply [at] merit.edu 20200501 #14:29:28Z source: RADB last-modified: 2023-11-13T16:00:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source