These entries are queried from radb.net using whois, you can try my project getting these.
:AS14263 route: 206.71.32.0/20 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20210924 source: ARIN rpki-ov-state: valid route: 206.176.16.0/20 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20210924 source: ARIN rpki-ov-state: valid route: 206.176.32.0/19 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20210924 source: ARIN rpki-ov-state: valid route: 206.176.40.0/23 descr: State of South Dakota - BHSU descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20220105 source: ARIN rpki-ov-state: valid route: 206.176.64.0/18 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20210924 source: ARIN rpki-ov-state: valid route: 206.176.64.0/19 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20181221 source: ARIN rpki-ov-state: valid route: 206.176.96.0/20 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20181221 source: ARIN rpki-ov-state: valid route: 206.176.112.0/20 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20181221 source: ARIN rpki-ov-state: valid route6: 2607:f578::/32 descr: State of South Dakota - BIT descr: 700 Governor's Drive descr: Pierre, SD 57501 descr: US origin: AS14263 mnt-by: MNT-SDSG changed: jeff.litterick [at] state.sd.us 20210924 source: ARIN rpki-ov-state: valid