These entries are queried from radb.net using whois, you can try my project getting these.
:AS24229 route: 202.126.16.0/22 descr: IX-layers, Inc. CIDR Block No.2-1 origin: AS24229 admin-c: JP00156961 tech-c: JP00156961 notify: admin [at] ix-layers.com mnt-by: MAINT-AS24229 changed: admin [at] ix-layers.com 20230818 source: JPIRR rpki-ov-state: valid route: 202.126.16.0/23 descr: IX-layers, Inc. CIDR Block No.2-1-1 origin: AS24229 admin-c: JP00156961 tech-c: JP00156961 notify: admin [at] ix-layers.com mnt-by: MAINT-AS24229 changed: admin [at] ix-layers.com 20240213 source: JPIRR rpki-ov-state: valid route: 202.126.18.0/23 descr: IX-layers, Inc. CIDR Block No.2-1-2 origin: AS24229 admin-c: JP00156961 tech-c: JP00156961 notify: admin [at] ix-layers.com mnt-by: MAINT-AS24229 changed: admin [at] ix-layers.com 20240213 source: JPIRR rpki-ov-state: valid route: 218.100.15.0/24 descr: IX-layers, Inc. CIDR Block No.1 origin: AS24229 admin-c: JP00156961 tech-c: JP00156961 notify: admin [at] ix-layers.com mnt-by: MAINT-AS24229 changed: admin [at] ix-layers.com 20230818 source: JPIRR rpki-ov-state: valid route6: 2404:168::/32 descr: IX-layers (proxy-registered by NetIRD) origin: AS24229 notify: takeshi [at] NetIRD.AD.JP mnt-by: MAINT-AS7529 changed: takeshi [at] NetIRD.AD.JP 20110617 source: NTTCOM rpki-ov-state: valid route6: 2404:168::/32 descr: IX-layers, Inc. IPv6 Block No.1 origin: AS24229 admin-c: JP00156961 tech-c: JP00156961 notify: admin [at] ix-layers.com mnt-by: MAINT-AS24229 changed: admin [at] ix-layers.com 20230818 source: JPIRR rpki-ov-state: valid