These entries are queried from radb.net using whois, you can try my project getting these.
:AS30710 route: 167.73.0.0/16 descr: AS30710 proxy-registered route by Cogent origin: AS30710 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040202 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 167.73.96.0/20 descr: PNAP-CHG Ussignal Routes origin: AS30710 mnt-by: MAINT-AS1828 changed: kkepner [at] internap.com 20040130 source: RADB last-modified: 2023-11-13T16:13:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 167.73.192.0/19 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS30710 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source