These entries are queried from radb.net using whois, you can try my project getting these.
:AS17651 route: 150.116.52.0/24 descr: LOA provided origin: AS17651 notify: james_cheng [at] chief.com.tw mnt-by: MAINT-AS17408 changed: james_cheng [at] chief.com.tw 20220301 source: RADB last-modified: 2023-11-13T16:09:25Z rpki-ov-state: valid route: 150.116.116.0/24 descr: LOA provided origin: AS17651 notify: james_cheng [at] chief.com.tw mnt-by: MAINT-AS17408 changed: james_cheng [at] chief.com.tw 20221016 source: RADB last-modified: 2023-11-13T16:12:45Z rpki-ov-state: valid route: 203.163.212.0/24 origin: AS17651 descr: Chief Telecom Inc. 2F, No. 68, Ruiguanf Rd., NeiHu District, mnt-by: MAINT-TW-CHIEF last-modified: 2018-06-22T04:57:11Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source