These entries are queried from radb.net using whois, you can try my project getting these.
:AS33156 route: 208.89.152.0/21 descr: Zone Telecom admin-c: ZONE1-LEVEL3 tech-c: ZONE1-LEVEL3 origin: AS33156 notify: BUSINESS [at] ZONETELECOM.COM mnt-by: EDH-GWI-MNT changed: david.neener [at] level3.com 20091111 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.89.152.0/21 descr: RR-RC-Secure Syscom-Portland origin: AS33156 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source