These entries are queried from radb.net using whois, you can try my project getting these.
:AS19541 route: 159.153.40.0/21 descr: 159.153.40.0/21 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20150227 #16:44:02Z source: RADB last-modified: 2023-11-13T15:47:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.56.0/23 descr: 159.153.56.0/23 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20150325 #15:45:49Z source: RADB last-modified: 2023-11-13T15:47:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.64.0/22 descr: 159.153.64.0/22 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20140716 #14:56:29Z source: RADB last-modified: 2023-11-13T15:46:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.92.0/22 descr: 159.153.92.0/22 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20140716 #14:57:06Z source: RADB last-modified: 2023-11-13T15:46:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.112.0/21 descr: 159.153.112.0/21 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20140716 #14:59:06Z source: RADB last-modified: 2023-11-13T15:46:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.152.0/22 descr: 159.153.152.0/22 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20140716 #14:59:46Z source: RADB last-modified: 2023-11-13T15:46:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 159.153.240.0/24 descr: Prolexic Technologies, Inc. origin: AS19541 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: japatel [at] akamai.com 20141224 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:11e:3010::/44 descr: 2620:11e:3010::/44 origin: AS19541 mnt-by: MAINT-AS19541 changed: agreusel [at] ea.com 20150225 #21:32:35Z source: RADB last-modified: 2023-11-13T15:47:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source