These entries are queried from radb.net using whois, you can try my project getting these.
:AS12276 route: 192.33.255.0/24 origin: AS12276 descr: SFMIX admin-c: MPE54-ARIN tech-c: STRA-ARIN tech-c: TP47-ARIN mnt-by: MNT-SFMIES created: 2020-06-24T06:49:43Z last-modified: 2023-08-07T16:10:35Z source: ARIN rpki-ov-state: valid route: 192.247.11.0/24 descr: Convergens - San Francisco origin: AS12276 mnt-by: MAINT-AS6140 changed: matt [at] peterson.org 20150824 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2606:6c80::/32 descr: Convergens - San Francisco origin: AS12276 mnt-by: MAINT-AS6140 changed: matt [at] peterson.org 20150824 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:11a:b000::/44 descr: SFMIX - Management origin: AS12276 mnt-by: MAINT-AS6140 changed: matt [at] peterson.org 20140710 source: ALTDB rpki-ov-state: valid route6: 2620:11a:b000::/44 origin: AS12276 descr: SFMIX admin-c: MPE54-ARIN tech-c: STRA-ARIN tech-c: TP47-ARIN mnt-by: MNT-SFMIES created: 2020-06-24T06:50:15Z last-modified: 2023-08-07T16:10:35Z source: ARIN rpki-ov-state: valid