These entries are queried from radb.net using whois, you can try my project getting these.
:AS32304 route: 192.30.224.0/23 descr: Natus Medical Inc. origin: AS32304 mnt-by: MAINT-CHTR-WD changed: denny.derda [at] chartercom.com 20141105 #18:25:46Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.30.224.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS32304 remarks: Proxy add for EDIA customer Natus Medical mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20150903 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.30.225.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS32304 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source