These entries are queried from radb.net using whois, you can try my project getting these.
:AS8104 route: 199.250.240.0/22 origin: AS8104 descr: Akamai Technologies Inc. mnt-by: MAINT-AS32787 changed: wcranmer [at] akamai.com 20201028 #19:45:04Z source: RADB last-modified: 2023-11-13T16:13:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.250.240.0/23 origin: AS8104 descr: MRFD #ECR000001350769 remarks: Proxy object for AS8104 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.250.242.0/23 descr: Prolexic Technologies, Inc. origin: AS8104 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: abenage [at] akamai.com 20180216 source: RADb last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source