These entries are queried from radb.net using whois, you can try my project getting these.
:AS10946 route: 104.152.84.0/22 descr: Network Time Foundation, Inc. descr: Home of NTP.ORG and the NTP Project origin: AS10946 mnt-by: MNT-NTF-5 changed: jgreco [at] ns.sol.net 20200405 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 174.46.75.0/24 descr: PNAP-NYC origin: AS10946 mnt-by: MAINT-AS1828 changed: asanders [at] internap.com 20130319 source: RADB last-modified: 2023-11-13T16:14:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:804:2000::/44 descr: Network Time Foundation, Inc. descr: Home of NTP.ORG and the NTP Project origin: AS10946 mnt-by: MNT-NTF-5 changed: jgreco [at] ns.sol.net 20200218 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source