These entries are queried from radb.net using whois, you can try my project getting these.
:AS1625 route: 8.23.252.0/23 descr: 8.23.252.0/23 - L3 origin: AS1625 mnt-by: MAINT-AS1625 changed: lawrence [at] corespace.com 20101115 #22:26:57Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.23.252.0/23 descr: New route for AS1625 origin: AS1625 mnt-by: CORESPACE-MNT changed: chris.rose [at] level3.com 20101115 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.188.144.0/22 descr: New route for AS1625 origin: AS1625 mnt-by: CORESPACE-MNT changed: nick.leibfritz [at] level3.com 20121201 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.188.144.0/22 descr: Champions origin: AS1625 mnt-by: MAINT-AS1625 changed: lawrence [at] corespace.com 20110801 #18:21:00Z source: RADB last-modified: 2023-11-13T15:41:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.90.24.0/24 descr: CORESPACE request origin: AS1625 mnt-by: CORESPACE-MNT changed: matthew.poulos [at] level3.com 20090820 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.59.54.0/24 descr: Customer origin: AS1625 mnt-by: MAINT-AS1625 changed: lawrence [at] corespace.com 20120228 #22:26:09Z source: RADB last-modified: 2023-11-13T15:42:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source