These entries are queried from radb.net using whois, you can try my project getting these.
:AS397141 route: 47.45.30.0/24 descr: VIS LLC origin: AS397141 mnt-by: MAINT-CHTR-WD changed: timothy.kao [at] charter.com 20190212 #16:16:36Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: valid