These entries are queried from radb.net using whois, you can try my project getting these.
:AS17157 route: 206.53.208.0/20 descr: RR-RC-Clear Channel-San Antonio origin: AS17157 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.53.212.0/24 descr: Prefix added on behalf of Telwest origin: AS17157 mnt-by: MAINT-AS7459 changed: ipservices [at] grandecom.com 20090408 #21:40:18Z source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.230.128.0/19 descr: RR-RC-Clear Channel-San Antonio origin: AS17157 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.117.240.0/20 descr: RR-RC-Clear Channel-San Antonio origin: AS17157 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source