These entries are queried from radb.net using whois, you can try my project getting these.
:AS399556 route: 168.11.60.0/23 descr: Proxy Record for Effingham County BOE remarks: Board of Regents of the University System of Georgia remarks: 2500 Daniells Bridge Rd. remarks: Athens, GA 30606 origin: AS399556 mnt-by: MAINT-AS3479 changed: nss-eng [at] usg.edu 20220118 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.11.60.0/23 origin: AS399556 descr: AS399556 proxy-registered route by Planters remarks: Proxy-registered route object remarks: for Planters customer. mnt-by: MAINT-AS26744 changed: craig.whetstone [at] planters.net 20210707 source: RADB last-modified: 2023-11-13T16:07:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source