These entries are queried from radb.net using whois, you can try my project getting these.
:AS23439 route: 204.48.60.0/24 descr: KQED - block1 origin: AS23439 remarks: KQED is now ready for BGP. notify: noc [at] monkeybrains.net mnt-by: MAINT-MONKEYBRAINS changed: noc [at] monkeybrains.net 20110826 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source