These entries are queried from radb.net using whois, you can try my project getting these.
:AS46688 route: 74.43.97.0/24 descr: Frontier Communications origin: AS46688 mnt-by: MAINT-CHTR-WD changed: john.abeln [at] chartercom.com 20091028 source: RADB last-modified: 2023-11-13T16:11:25Z rpki-ov-state: valid