These entries are queried from radb.net using whois, you can try my project getting these.
:AS394673 route: 148.8.0.0/16 descr: Milwaukee Area Technical College (MATC) origin: AS394673 mnt-by: MAINT-WISCNET changed: wopat [at] wiscnet.net 20181009 #16:01:45Z source: RADB last-modified: 2023-11-13T15:54:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 148.8.0.0/17 descr: Milwaukee Area Technical College origin: AS394673 mnt-by: MAINT-WISCNET changed: akoch [at] wiscnet.net 20180219 #16:54:32Z source: RADB last-modified: 2023-11-13T15:53:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 148.8.128.0/17 descr: Milwaukee Area Technical College origin: AS394673 mnt-by: MAINT-WISCNET changed: akoch [at] wiscnet.net 20180219 #16:54:32Z source: RADB last-modified: 2023-11-13T15:53:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source