These entries are queried from radb.net using whois, you can try my project getting these.
:AS46143 route: 162.255.128.0/22 descr: ADDED FOR - AS46143 origin: AS46143 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20141229 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.255.128.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS46143 remarks: Proxy add for customer Greektown Casino mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20141216 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source