These entries are queried from radb.net using whois, you can try my project getting these.
:AS53577 route: 38.98.223.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.204.107.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: valid route: 192.204.146.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: valid route: 192.204.148.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: valid route: 198.17.40.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.138.40.0/23 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: valid route: 198.138.132.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS53577 remarks: Proxy add for EDIA customer AS53577 mnt-by: MAINT-AS7922 changed: scott_mccormick2 [at] cable.comcast.com 20170310 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: valid