These entries are queried from radb.net using whois, you can try my project getting these.
:AS54851 route: 199.175.101.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54851 remarks: Proxy Add for EDIA Customer New England Baptist Hospital mnt-by: MAINT-AS7922 changed: robert_beauvais [at] cable.comcast.com 20121009 #17:20:58Z source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source