These entries are queried from radb.net using whois, you can try my project getting these.
:AS54061 route: 66.115.229.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54061 remarks: Proxy add for EDIA customer The Bancorp Bank mnt-by: MAINT-AS7922 changed: jeffrey_mitten2 [at] cable.comcast.com 20160504 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: 66.115.230.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54061 remarks: Proxy add for EDIA customer The Bancorp Bank mnt-by: MAINT-AS7922 changed: jeffrey_mitten2 [at] cable.comcast.com 20160504 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: 192.51.48.0/24 descr: The Bancorp Inc. origin: AS54061 mnt-by: MAINT-AS27506 changed: philippe.robillard [at] crowncastle.com 20201103 source: RADB last-modified: 2023-11-13T16:02:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.77.161.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54061 remarks: Proxy Route Add for Comcast Customer mnt-by: MAINT-AS7922 changed: dave_hill [at] cable.comcast.com 20130104 #16:51:54Z source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:d0:4000::/48 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS54061 remarks: Proxy add for EDIA customer The Bancorp Bank mnt-by: MAINT-AS7922 changed: jeffrey_mitten2 [at] cable.comcast.com 20160504 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source