These entries are queried from radb.net using whois, you can try my project getting these.
:AS20718 route: 162.252.156.0/22 origin: AS20718 descr: US ACS-Customer mnt-by: MAINT-AS8560 changed: roman.meyer [at] 1und1.de 20190221 #16:37:51Z source: RADB last-modified: 2023-11-13T16:19:25Z rpki-ov-state: valid route: 162.252.156.0/22 origin: AS20718 descr: IONOS-Miami admin-c: 1NO-ARIN tech-c: 1NO-ARIN mnt-by: MNT-11INT created: 2023-02-03T14:12:37Z last-modified: 2023-02-03T14:12:37Z source: ARIN rpki-ov-state: valid