These entries are queried from radb.net using whois, you can try my project getting these.
:AS46303 route: 63.86.120.0/22 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:04:48Z 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: 63.87.112.0/20 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:06:14Z 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: 65.240.28.0/22 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:07:24Z 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: 65.248.208.0/20 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:08:27Z 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: 65.255.240.0/20 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS46303 remarks: Added on behalf of POPP COMMUNICATIONS mnt-by: MAINT-AS7922 changed: kristijan_taskovski [at] cable.comcast.com 20130612 #02:02:48Z 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: 76.76.48.0/20 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:09:33Z 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: 173.240.16.0/20 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:10:36Z 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: 208.254.148.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS46303 remarks: Added on behalf of POPP COMMUNICATIONS mnt-by: MAINT-AS7922 changed: kristijan_taskovski [at] cable.comcast.com 20130612 #02:06:02Z 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: 216.14.176.0/20 descr: Comcast cable Communications, Inc. 1800 Bishops Gate Blvd Mt laurel, NJ 08054 origin: AS46303 remarks: Proxy object for customer Popp Communications mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130903 #20:12:23Z source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source