These entries are queried from radb.net using whois, you can try my project getting these.
:AS62755 route: 198.8.60.0/23 descr: Proxy Registration for ViaTalk LLC. remarks: Proxy Registered by ServerCentral origin: AS62755 mnt-by: MAINT-SERVERCENTRAL changed: ipeng [at] servercentral.net 20140401 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source