These entries are queried from radb.net using whois, you can try my project getting these.
:AS25671 route: 50.207.86.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS25671 remarks: Proxy add for EDIA customer SOUTHERN-CALIFORNIA-TELEPHONE-COMPANY mnt-by: MAINT-AS7922 changed: orin_flaharty [at] cable.comcast.com 20220608 source: RADB last-modified: 2023-11-13T16:11:24Z rpki-ov-state: valid route: 208.79.104.0/21 descr: RR-RC-Southern California Telephone Company-PacWest origin: AS25671 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source