These entries are queried from radb.net using whois, you can try my project getting these.
:AS398374 route: 50.223.57.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS398374 remarks: Proxy add for EDIA customer Orbit Irrigation Products, Inc mnt-by: MAINT-AS7922 changed: orin_flaharty [at] cable.comcast.com 20220103 source: RADB last-modified: 2023-11-13T16:09:06Z rpki-ov-state: valid route: 50.230.122.0/24 origin: AS398374 descr: Orbit mnt-by: MAINT-AS13415 changed: ambrose.curtis [at] firstdigital.com 20230504 #21:25:37Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: valid