These entries are queried from radb.net using whois, you can try my project getting these.
:AS213 route: 131.92.0.0/17 descr: DREN IPv4 origin: AS213 mnt-by: MAINT-AS668 changed: dale.geesey.ctr [at] dren.hpc.mil 20181022 #14:50:53Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:480:1670::/48 descr: DREN IPv6 origin: AS213 mnt-by: MAINT-AS668 changed: dale.geesey.ctr [at] dren.hpc.mil 20181019 #14:05:31Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source