These entries are queried from radb.net using whois, you can try my project getting these.
:AS63402 route: 8.19.252.0/23 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS63402 remarks: Proxy add for EDIA customer Universal Orlando mnt-by: MAINT-AS7922 changed: orin_flaharty [at] cable.comcast.com 20181226 source: RADB last-modified: 2023-11-13T15:55:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 50.230.6.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS63402 remarks: Proxy add for EDIA customer NBC Universal mnt-by: MAINT-AS7922 changed: ryan_mcclean [at] comcast.com 20190524 source: RADB last-modified: 2023-11-13T15:56:25Z rpki-ov-state: valid route: 103.155.45.0/24 descr: USJ LLC X-Keiro:IT_NetworkTeam [at] usjc.co.jp origin: AS63402 notify: IT_NetworkTeam [at] usjc.co.jp mnt-by: MAINT-AS63402 changed: pastor_badinas [at] usjc.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.155.45.0/24 descr: Telstra International Limited origin: AS63402 mnt-by: MAINT-AS4637 changed: irr [at] team.telstra.com 20240418 source: RADB notify: irr [at] team.telstra.com tech-c: TI54-AP last-modified: 2024-04-18T08:16:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.96.192.0/24 descr: Universal Orlando descr: 1000 Universal Studios Plaza descr: Orlando, Florida 32819 descr: US origin: AS63402 mnt-by: MNT-UCDPL changed: robert.burchard [at] universalorlando.com 20151127 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df4:b480::/48 descr: USJ LLC X-Keiro:IT_NetworkTeam [at] usjc.co.jp origin: AS63402 notify: IT_NetworkTeam [at] usjc.co.jp mnt-by: MAINT-AS63402 changed: pastor_badinas [at] usjc.co.jp 20230901 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source