These entries are queried from radb.net using whois, you can try my project getting these.
:AS27296 route: 204.107.115.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS27296 remarks: Proxy add for EDI customer Wilmington Univ mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamhere.cable.comcast.com 20150408 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source