These entries are queried from radb.net using whois, you can try my project getting these.
:AS33753 route: 12.24.226.0/24 descr: US Signal downstream customer origin: AS33753 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20090120 #21:20:54Z source: RADB last-modified: 2023-11-13T15:39:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.192.129.0/24 descr: US Signal downstream customer origin: AS33753 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20090120 #21:21:37Z source: RADB last-modified: 2023-11-13T15:39:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 76.81.147.0/24 descr: RR-RC-West Bend Mutual Insurance-West Bend origin: AS33753 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:16Z rpki-ov-state: valid