These entries are queried from radb.net using whois, you can try my project getting these.
:AS63071 route: 38.73.227.0/24 origin: AS63071 descr: MRFD remarks: Proxy object for AS63071 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.73.233.0/24 origin: AS63071 descr: MRFD remarks: Proxy object for AS63071 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.201.151.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS63071 remarks: Proxy add for customer Stafford County Public Schools mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20141021 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 174.66.101.0/24 origin: AS63071 descr: MRFD remarks: Proxy object for AS63071 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:05Z rpki-ov-state: valid