These entries are queried from radb.net using whois, you can try my project getting these.
:AS393548 route: 192.48.255.0/24 origin: AS393548 descr: ABRIACLOUD mnt-by: MAINT-AS32298 changed: noc [at] evoquedcs.com 20230802 #17:00:49Z source: RADB last-modified: 2023-11-13T16:17:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source