These entries are queried from radb.net using whois, you can try my project getting these.
:AS32370 route: 64.8.27.0/24 descr: TelCove BGP Customer netblock tech-c: TC1-LEVEL3 origin: AS32370 member-of: rs-19094-CUSTOMER remarks: VonAge mnt-by: MAINT-AS19094 changed: mike.fletcher [at] telcove.com 20040818 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.51.18.0/24 descr: Vonage Holdings 23 Main St Holmdel, NJ 07733 USA origin: AS32370 mnt-by: MAINT-VONAGE changed: irr [at] vonage.com 20060907 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.51.18.0/24 descr: TelCove BGP Customer netblock tech-c: TC1-LEVEL3 origin: AS32370 member-of: rs-19094-CUSTOMER remarks: VonAge mnt-by: MAINT-AS19094 changed: mike.fletcher [at] telcove.com 20040818 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source