These entries are queried from radb.net using whois, you can try my project getting these.
:AS18987 route: 66.51.242.0/24 descr: TeleHost origin: AS18987 mnt-by: maint-as33554 changed: skhosla [at] neutraldata.com 20080630 #16:40:03Z source: RADB last-modified: 2023-11-13T15:58:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.71.112.0/23 descr: GlobalMDM block 1 origin: AS18987 mnt-by: MAINT-AS33554 changed: skhosla [at] neutraldata.com 20080630 #16:09:08Z source: RADB last-modified: 2023-11-13T15:58:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.71.115.0/24 descr: Cognos Networks origin: AS18987 mnt-by: MAINT-AS33554 changed: skhosla [at] neutraldata.com 20080630 #16:13:31Z source: RADB last-modified: 2023-11-13T15:58:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source