These entries are queried from radb.net using whois, you can try my project getting these.
:AS36499 route: 24.75.71.0/24 descr: TelCove BGP Customer netblock tech-c: TC1-LEVEL3 origin: AS36499 member-of: rs-19094-CUSTOMER remarks: Winchester Carpet dba Rugs Direct mnt-by: MAINT-AS19094 changed: frances.mcclellan [at] telcove.com 20060128 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source