These entries are queried from radb.net using whois, you can try my project getting these.
:AS30521 route: 204.89.143.0/24 descr: US Signal, Downstream Customer origin: AS30521 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20111117 #20:14:17Z source: RADB last-modified: 2023-11-13T15:41:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.223.191.0/24 descr: PNAP-CHG ussignal routes origin: AS30521 mnt-by: MAINT-AS1828 changed: kkepner [at] internap.com 20031106 source: RADB last-modified: 2023-11-13T16:13:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source