These entries are queried from radb.net using whois, you can try my project getting these.
:AS23827 route: 103.141.34.0/23 descr: ANC-Net origin: AS23827 notify: hosoda.kouji [at] anc-tv.co.jp mnt-by: MAINT-AS23827 changed: hosoda.kouji [at] anc-tv.co.jp 20231130 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 115.31.80.0/21 descr: ANC-Net origin: AS23827 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4722 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20101101 source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 115.31.80.0/21 descr: ANC-Net origin: AS23827 notify: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp mnt-by: MAINT-AS4725 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20220531 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.84.48.0/20 descr: ANC-Net origin: AS23827 mnt-by: MAINT-AS4722 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20101101 source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.84.48.0/20 descr: ANC-Net origin: AS23827 mnt-by: MAINT-AS4725 changed: gw.odn.ad.jp">as-admin [at] gw.odn.ad.jp 20220531 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.226.56.0/22 descr: ANC-Net origin: AS23827 notify: hosoda.kouji [at] anc-tv.co.jp mnt-by: MAINT-AS23827 changed: hosoda.kouji [at] anc-tv.co.jp 20231130 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.14.200.0/21 descr: ANC-Net X-Keiro : hosoda.kouji [at] anc-tv.co.jp origin: AS23827 notify: hosoda.kouji [at] anc-tv.co.jp mnt-by: MAINT-AS23827 changed: hosoda.kouji [at] anc-tv.co.jp 20230427 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2405:7740::/32 descr: ANC-Net X-Keiro : hosoda.kouji [at] anc-tv.co.jp origin: AS23827 notify: hosoda.kouji [at] anc-tv.co.jp mnt-by: MAINT-AS23827 changed: hosoda.kouji [at] anc-tv.co.jp 20240129 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source