These entries are queried from radb.net using whois, you can try my project getting these.
:AS54443 route: 170.76.230.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS54443 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamcable.comcast.com 20180914 source: RADB last-modified: 2023-11-13T15:54:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source