These entries are queried from radb.net using whois, you can try my project getting these.
:AS17949 route: 163.215.0.0/16 descr: Tokyo University of Technorogy origin: AS17949 notify: peer [at] sakura.ad.jp mnt-by: MAINT-AS7684 changed: peer [at] sakura.ad.jp 20230801 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 163.215.0.0/16 descr: Tokyo University of Technorogy origin: AS17949 mnt-by: MAINT-AS7684 changed: hamasaki [at] sakura.ad.jp 20090916 source: RADB last-modified: 2023-11-13T15:40:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 163.215.0.0/24 descr: PACNET (proxy-registered route object) origin: AS17949 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some ANC peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net for any related SPAM/abuse case + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20140311 source: RADB last-modified: 2023-11-13T15:58:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source