These entries are queried from radb.net using whois, you can try my project getting these.
:AS22841 route: 208.73.176.0/22 descr: TelCove BGP Customer netblock tech-c: TC1-LEVEL3 origin: AS22841 member-of: rs-19094-CUSTOMER remarks: Northampton Community College mnt-by: MAINT-AS19094 changed: frank.delung [at] telcove.com 20070129 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source