These entries are queried from radb.net using whois, you can try my project getting these.
:AS13683 route: 63.239.186.0/24 descr: Auto-Wares Inc origin: AS13683 mnt-by: I123-MNT changed: rpd [at] 123.net 20060104 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.239.186.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS13683 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] no.spam.cable.comcast.com 20171214 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source