These entries are queried from radb.net using whois, you can try my project getting these.
:AS53974 route: 50.93.192.0/20 origin: AS53974 descr: San Jose Cloud admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-12T14:33:59Z last-modified: 2021-05-12T14:33:59Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 50.93.192.0/20 descr: PROXY REGISTRATION FOR Jazz Networks origin: AS53974 admin-c: JAZZNETWORKS tech-c: JAZZNETWORKS mnt-by: MAINT-AS8100 changed: kate [at] quadranet.com 20110922 #01:58:58Z source: RADB last-modified: 2023-11-13T15:47:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 50.93.193.0/24 origin: AS53974 admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-01-15T18:16:17Z last-modified: 2021-01-15T18:16:17Z source: ARIN descr: MNT-JN route 050.093.193.000/24 AS53974 rpki-ov-state: valid route: 50.93.194.0/24 origin: AS53974 descr: San Jose Cloud admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-12T14:31:08Z last-modified: 2021-05-12T14:31:08Z source: ARIN rpki-ov-state: valid route: 50.93.196.0/24 origin: AS53974 descr: Jazz Network Inc. admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-28T01:17:24Z last-modified: 2021-05-28T01:17:24Z source: ARIN rpki-ov-state: valid route: 50.93.200.0/24 origin: AS53974 descr: Jazz Network Inc. admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-28T01:36:48Z last-modified: 2021-05-28T01:36:48Z source: ARIN rpki-ov-state: valid route: 50.93.202.0/24 origin: AS53974 descr: Jazz Network Inc. admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-28T01:37:22Z last-modified: 2021-05-28T01:37:22Z source: ARIN rpki-ov-state: valid route: 50.93.206.0/24 origin: AS53974 descr: Jazz Network Inc. admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-05-28T01:15:28Z last-modified: 2021-05-28T01:15:28Z source: ARIN rpki-ov-state: valid route: 50.93.207.0/24 origin: AS53974 descr: San Jose Cloud admin-c: XIARA-ARIN tech-c: XIARA-ARIN mnt-by: MNT-JN created: 2021-11-10T01:49:25Z last-modified: 2021-11-10T01:49:25Z source: ARIN rpki-ov-state: valid