These entries are queried from radb.net using whois, you can try my project getting these.
:AS53384 route: 152.15.0.0/16 descr: University of North Carolina at Charlotte origin: AS53384 mnt-by: MAINT-AS27506 changed: mdimambro [at] lightower.com 20180904 source: RADB last-modified: 2023-11-13T15:54:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:7b40::/32 descr: Autogenerated route object for transit customer origin: AS53384 remarks: Contained within the UNCC-NET6 block admin-c: NH34-ORG-ARIN tech-c: NH34-ORG-ARIN notify: hostmaster [at] ncren.net changed: irr [at] mcnc.org 20231219 mnt-by: MAINT-AS81 source: RADB last-modified: 2023-12-19T17:47:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source