These entries are queried from radb.net using whois, you can try my project getting these.
:AS25856 route: 68.233.128.0/20 descr: Walter Karl, Inc. origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190227 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.8.0/22 descr: Infogroup Corp origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190331 source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.8.0/24 descr: Walter Karl, Inc. origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190214 #19:39:41Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.9.0/24 descr: Walter Karl, Inc. origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190227 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.10.0/24 descr: Walter Karl, Inc. origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190227 source: RADB last-modified: 2023-11-13T15:55:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.11.0/24 descr: Walter Karl, Inc. origin: AS25856 mnt-by: MAINT-AS27506 changed: robert.hinst [at] crowncastle.com 20190214 #19:39:41Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source