These entries are queried from radb.net using whois, you can try my project getting these.
:AS399586 route: 204.49.19.0/24 origin: AS399586 descr: PNSC remarks: Proxy object for AS399586 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.49.20.0/24 origin: AS399586 descr: V4-PUB-CB-ANNOUNCED remarks: Change Ticket missing prefix mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220707 source: RADB last-modified: 2023-11-13T16:11:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.49.21.0/24 origin: AS399586 descr: V4-PUB-CB-ANNOUNCED remarks: Change Ticket ECR000001360939 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220530 source: RADB last-modified: 2023-11-13T16:11:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.49.24.0/21 origin: AS399586 descr: V4-PUB-CB-ANNOUNCED remarks: Change Ticket UNO000035023616 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220531 source: RADB last-modified: 2023-11-13T16:11:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source