These entries are queried from radb.net using whois, you can try my project getting these.
:AS16702 route6: 2600:1402:5::/48 descr: Akamai Technologies origin: AS16702 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20111207 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source