These entries are queried from radb.net using whois, you can try my project getting these.
:AS18481 route: 166.109.0.0/16 descr: Boces network 1 origin: AS18481 mnt-by: SWBOCES-MNT changed: james.blaney [at] level3.com 20060610 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 166.109.0.0/16 descr: BOCES Southern Westchester origin: AS18481 mnt-by: MAINT-AS27506 changed: michael.dimambro [at] crowncastle.com 20190820 source: RADB last-modified: 2023-11-13T15:57:04Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source