These entries are queried from radb.net using whois, you can try my project getting these.
:AS398091 route: 64.140.172.0/22 origin: AS398091 descr: Proxy registration for ZX4 remarks: LoA on file 7/15/2021 mnt-by: MAINT-AS18450 changed: mkamali [at] webnx.com 20210715 #19:11:58Z source: RADB last-modified: 2023-11-13T16:07:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.238.0/24 origin: AS398091 descr: Proxy registration for ZX4 remarks: LoA on file 5/25/2021 mnt-by: MAINT-AS18450 changed: mkamali [at] webnx.com 20210526 #04:07:52Z source: RADB last-modified: 2023-11-13T16:05:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.239.0/24 origin: AS398091 descr: ZX4 Prefix mnt-by: MAINT-AS18450 changed: mkamali [at] webnx.com 20230326 #20:56:20Z source: RADB last-modified: 2023-11-13T16:15:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source