These entries are queried from radb.net using whois, you can try my project getting these.
:AS6305 route: 192.12.55.0/24 descr: RR-RC-Alliance Entertainment-Milwaukee origin: AS6305 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.48.210.0/24 descr: RR-ALLIANCE ENTERTAINMENT-Ohio origin: AS6305 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-RR changed: PublicIPAdressing [at] charter.com 20220307 source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source