These entries are queried from radb.net using whois, you can try my project getting these.
:AS54560 route: 8.14.103.0/24 descr: RADIO ONE/ATLANTECH origin: AS54560 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20141022 #12:35:54Z source: RADB last-modified: 2023-11-13T15:46:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.4.31.0/24 descr: RADIO ONE/ATLANTECH origin: AS54560 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20120411 #18:09:19Z source: RADB last-modified: 2023-11-13T15:42:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.76.24.0/24 descr: RADIO ONE/ATLANTECH origin: AS54560 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20141124 #18:40:11Z source: RADB last-modified: 2023-11-13T15:47:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.76.25.0/24 descr: RADIO ONE/ATLANTECH origin: AS54560 mnt-by: MAINT-AS7784 changed: noc [at] atlantech.net 20141125 #15:21:08Z source: RADB last-modified: 2023-11-13T15:47:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source