These entries are queried from radb.net using whois, you can try my project getting these.
:AS19280 route: 204.68.151.0/24 descr: Route for Bresnan Wyoming Medical Center origin: AS19280 mnt-by: BRS-MNT changed: jgreenwood [at] bresnan.com 20100526 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.145.171.0/24 descr: Route for Bresnan Wyoming Medical Center origin: AS19280 mnt-by: BRS-MNT changed: jgreenwood [at] bresnan.com 20100526 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.167.90.0/23 descr: Route for Bresnan Wyoming Medical Center origin: AS19280 mnt-by: BRS-MNT changed: jgreenwood [at] bresnan.com 20100526 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source