These entries are queried from radb.net using whois, you can try my project getting these.
:AS14505 route: 216.49.160.0/20 origin: AS14505 descr: Proxy ISLC Customer Prefix mnt-by: MAINT1-AS22646 changed: craig.washington [at] htc.hargray.com 20190102 #18:16:24Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.49.160.0/24 origin: AS14505 descr: 2121 Boundary St, Ste 208 Beaufort SC 29902 United States remarks: Updated 20200703 admin-c: ADMIN288-ARIN tech-c: ABUSE502-ARIN mnt-by: MNT-ISLC created: 2020-07-03T18:31:43Z last-modified: 2022-01-25T19:56:15Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source