These entries are queried from radb.net using whois, you can try my project getting these.
:AS54637 route: 199.127.122.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54637 remarks: Comcast EDIA customer Simplii LLC mnt-by: MAINT-AS7922 changed: sean_boulaphinh [at] cable.comcast.com 20120502 #04:04:39Z source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source