These entries are queried from radb.net using whois, you can try my project getting these.
:AS23022 route: 216.228.128.0/20 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS23022 remarks: Proxy add for EDIA customer Delaware State University mnt-by: MAINT-AS7922 changed: michael_erickson2 [at] cable.comcast.com 20150910 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source