These entries are queried from radb.net using whois, you can try my project getting these.
:AS45324 route: 202.52.146.0/23 descr: Routes announced to Level 3 by BIZNET. origin: AS45324 mnt-by: BIZNET-MNT changed: noc [at] biznetnetworks.com 20160623 source: LEVEL3 rpki-ov-state: valid route: 202.52.146.0/24 descr: Proxy-registered route object origin: AS45324 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20120919 source: RADB last-modified: 2023-11-13T15:43:22Z rpki-ov-state: valid route: 202.52.146.0/24 descr: Routes announced to Level 3 by BIZNET. origin: AS45324 mnt-by: BIZNET-MNT changed: noc [at] biznetnetworks.com 20170130 source: LEVEL3 rpki-ov-state: valid route: 202.52.147.0/24 descr: Routes announced to Level 3 by BIZNET. origin: AS45324 mnt-by: BIZNET-MNT changed: noc [at] biznetnetworks.com 20170130 source: LEVEL3 rpki-ov-state: valid route: 202.52.147.0/24 descr: Proxy-registered route object origin: AS45324 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20120919 source: RADB last-modified: 2023-11-13T15:43:22Z rpki-ov-state: valid