These entries are queried from radb.net using whois, you can try my project getting these.
:AS64293 route: 144.121.43.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS64293 remarks: Proxy add for EDIA customer Mobile Heartbeat mnt-by: MAINT-AS7922 changed: orin_flaharty [at] cable.comcast.com 20180606 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source