These entries are queried from radb.net using whois, you can try my project getting these.
:AS14597 route: 63.235.120.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS14597 remarks: Proxy add for EDIA customer Trans_S mnt-by: MAINT-AS7922 changed: rodney_finley [at] cable.comcast.com 20210720 source: RADB last-modified: 2023-11-13T16:07:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source