These entries are queried from radb.net using whois, you can try my project getting these.
:AS14046 route: 66.228.96.0/20 descr: EMBARQ HSD origin: AS14046 mnt-by: EMBARQ-MNT changed: casey.w.grover [at] centurylink.com 20110429 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.228.96.0/20 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS14046 remarks: Proxy add for EDIA customer Indiana-14046 mnt-by: MAINT-AS7922 changed: sung_kim [at] cable.comcast.com 20200828 source: RADB last-modified: 2023-11-13T16:01:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source