These entries are queried from radb.net using whois, you can try my project getting these.
:AS393483 route: 70.34.166.0/24 descr: Proxy for US Signal Yeo Yeo. origin: AS393483 mnt-by: MAINT-CHTR-WD changed: steven.hurst [at] chartercom.com 20140812 #14:52:46Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source