These entries are queried from radb.net using whois, you can try my project getting these.
:AS11036 route: 209.251.0.0/20 descr: AS11036 proxy-registered route by Cogent origin: AS11036 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040602 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source