These entries are queried from radb.net using whois, you can try my project getting these.
:AS14241 route: 136.228.33.0/24 origin: AS14241 descr: MISEN - NOC at Oakland Schools admin-c: ADMIN6127-ARIN tech-c: ADMIN6127-ARIN tech-c: KKT-ARIN mnt-by: MNT-MSEN-1 created: 2023-03-10T19:44:53Z last-modified: 2023-03-10T19:44:53Z source: ARIN rpki-ov-state: valid route: 216.11.0.0/16 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T14:08:33Z last-modified: 2023-05-03T14:08:33Z source: ARIN rpki-ov-state: valid route: 216.11.0.0/17 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T14:45:43Z last-modified: 2023-05-03T14:45:43Z source: ARIN rpki-ov-state: valid route: 216.11.2.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:08:44Z last-modified: 2023-05-03T15:08:44Z source: ARIN rpki-ov-state: valid route: 216.11.74.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:09:31Z last-modified: 2023-05-03T15:09:31Z source: ARIN rpki-ov-state: valid route: 216.11.92.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:10:27Z last-modified: 2023-05-03T15:10:27Z source: ARIN rpki-ov-state: valid route: 216.11.99.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:11:18Z last-modified: 2023-05-03T15:11:18Z source: ARIN rpki-ov-state: valid route: 216.11.128.0/17 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T14:46:36Z last-modified: 2023-05-03T14:46:36Z source: ARIN rpki-ov-state: valid route: 216.11.139.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:12:11Z last-modified: 2023-05-03T15:12:11Z source: ARIN rpki-ov-state: valid route: 216.11.253.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:13:05Z last-modified: 2023-05-03T15:13:05Z source: ARIN rpki-ov-state: valid route: 216.11.254.0/24 origin: AS14241 descr: Oakland Network for Education admin-c: NOC2107-ARIN tech-c: NOC2107-ARIN mnt-by: MNT-OAKLAN-5 created: 2023-05-03T15:13:55Z last-modified: 2023-05-03T15:13:55Z source: ARIN rpki-ov-state: valid