These entries are queried from radb.net using whois, you can try my project getting these.
:AS26052 route: 64.29.96.0/20 descr: Proxy Registration for ABN AMRO CLEARING remarks: Proxy Registered by ServerCentral origin: AS26052 mnt-by: MAINT-SERVERCENTRAL changed: ipeng [at] servercentral.net 20140414 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.29.96.0/20 descr: PNAP-CHG Fortis Clearing origin: AS26052 mnt-by: MAINT-AS1828 changed: djaffers [at] internap.com 20060925 source: RADB last-modified: 2023-11-13T16:13:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.250.144.0/24 descr: AS26052 proxy-registered route by Cogent origin: AS26052 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source