These entries are queried from radb.net using whois, you can try my project getting these.
:AS35904 route: 74.120.224.0/21 descr: LLNW cust origin: AS35904 mnt-by: MAINT-LLNW changed: mjohnson [at] llnw.com 20110407 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.120.224.0/21 descr: Switch Communications Customer Route origin: AS35904 remarks: Route for Customer APOLLO GROUP mnt-by: SWITCHCOM-MNT changed: ppillera [at] switchnap.com 20110314 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source