These entries are queried from radb.net using whois, you can try my project getting these.
:AS27187 route: 68.234.38.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS27187 remarks: Proxy add for EDIA customer Pennsylvania Mountain Health Alliance mnt-by: MAINT-AS7922 changed: ryan_mcclean [at] comcast.com 20190729 source: RADB last-modified: 2023-11-13T15:56:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source