These entries are queried from radb.net using whois, you can try my project getting these.
:AS397497 route: 216.226.0.0/24 origin: AS397497 descr: MTC3 remarks: Proxy object for AS397497 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.226.2.0/24 origin: AS397497 descr: V4-PUB-CB-ANNOUNCED remarks: Change Ticket ECR000001587844 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20230427 source: RADB last-modified: 2023-11-13T16:17:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.226.3.0/24 origin: AS397497 descr: MTC3 remarks: Proxy object for AS397497 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:815:4001::/48 origin: AS397497 descr: V6-PUB-CB-ANNOUNCED remarks: Change Ticket ECR000001768890 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com source: RADB last-modified: 2024-01-11T08:26:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:815:4002::/48 origin: AS397497 descr: V6-PUB-CB-ANNOUNCED remarks: Change Ticket ECR000001744225 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com source: RADB last-modified: 2023-11-22T08:53:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source