These entries are queried from radb.net using whois, you can try my project getting these.
:AS393657 route: 208.94.48.0/22 descr: RR-RC-COLORADO MESA UNIVERSITY-West origin: AS393657 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-RR changed: PublicIPAdressing [at] charter.com 20231025 source: RADB last-modified: 2023-11-13T16:19:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:13b:a000::/44 descr: CHTR-COLORADO MESA UNIVERSITY-Northwest origin: AS393657 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: PublicIPAdressing [at] charter.com 20220802 source: RADB last-modified: 2023-11-13T16:12:03Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source