These entries are queried from radb.net using whois, you can try my project getting these.
:AS19837 route: 206.208.90.0/24 origin: AS19837 admin-c: NETOP233-ARIN tech-c: NETOP233-ARIN mnt-by: MNT-SBS-110 created: 2020-12-14T20:20:03Z last-modified: 2020-12-14T20:20:03Z source: ARIN descr: MNT-SBS-110 route 206.208.090.000/24 AS19837 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.208.93.0/24 descr: RR-RC-Stock Building Supply-Raleigh origin: AS19837 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:14:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.208.94.0/24 descr: RR-RC-Stock Building Supply-Raleigh origin: AS19837 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:14:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source