These entries are queried from radb.net using whois, you can try my project getting these.
:AS397871 route: 148.59.61.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS397871 remarks: Proxy add for EDIA customer CITYOFDETRO-397871 mnt-by: MAINT-AS7922 changed: rhyan_delapena [at] cable.comcast.com 20200806 source: RADB last-modified: 2023-11-13T16:01:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source