These entries are queried from radb.net using whois, you can try my project getting these.
:AS15041 route: 204.62.28.0/22 origin: AS15041 descr: Isotech, Inc mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20220306 #04:37:37Z source: RADB last-modified: 2023-11-13T16:09:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.62.28.0/24 origin: AS15041 descr: Proxy for Isotech mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20230621 #13:10:31Z source: RADB last-modified: 2023-11-13T16:17:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.62.29.0/24 origin: AS15041 descr: Proxy for Isotech mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20230621 #13:10:56Z source: RADB last-modified: 2023-11-13T16:17:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.62.30.0/24 origin: AS15041 descr: Proxy for Isotech mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20230621 #13:11:27Z source: RADB last-modified: 2023-11-13T16:17:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.62.31.0/24 origin: AS15041 descr: Proxy for Isotech mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20230621 #13:11:54Z source: RADB last-modified: 2023-11-13T16:17:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source