These entries are queried from radb.net using whois, you can try my project getting these.
:AS23517 route: 162.211.200.0/21 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS23517 remarks: Proxy add for customer Systems Solution , Inc mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20131016 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source