These entries are queried from radb.net using whois, you can try my project getting these.
:AS55273 route: 142.105.66.0/24 descr: RR-RC-ETC Venues-NYC origin: AS55273 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20200205 #00:11:48Z source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: valid