These entries are queried from radb.net using whois, you can try my project getting these.
:AS10602 route: 206.180.224.0/20 descr: NET-TDL-BLK origin: AS10602 remarks: TDL Netblock mnt-by: MAINT-NTTCOM-RA changed: boudreat [at] eng.verio.net 20070413 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source