These entries are queried from radb.net using whois, you can try my project getting these.
:AS53758 route: 23.128.96.0/24 descr: Invalid Network - Main IPv4 origin: AS53758 mnt-by: MAINT-AS53758 changed: warthog9 [at] invalid.network 20181003 source: ALTDB rpki-ov-state: valid route6: 2620:137:e000::/44 descr: Invalid Network - Main IPv6 origin: AS53758 mnt-by: MAINT-AS53758 changed: warthog9 [at] invalid.network 20181003 source: ALTDB rpki-ov-state: valid