These entries are queried from radb.net using whois, you can try my project getting these.
:AS393750 route: 150.243.0.0/16 descr: Northeast Missouri State University Computer Services McClain Hall 107 Kirksville MO 63501, USA origin: AS393750 member-of: RS-COMM_NSFNET mnt-by: MAINT-AS2572 changed: noc [at] more.net 20150821 #16:26:39Z source: RADB last-modified: 2023-11-13T15:48:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 150.243.64.0/18 origin: AS393750 descr: Truman State University mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20220208 #03:30:38Z source: RADB last-modified: 2023-11-13T16:09:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 150.243.128.0/17 origin: AS393750 descr: Truman State University mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20220208 #03:29:55Z source: RADB last-modified: 2023-11-13T16:09:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 150.243.192.0/19 origin: AS393750 descr: Proxy for Truman State University mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20230620 #16:36:14Z source: RADB last-modified: 2023-11-13T16:17:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source