These entries are queried from radb.net using whois, you can try my project getting these.
:AS266848 route: 45.238.196.0/22 descr: ip add client etb UNIVERSIDAD MILITAR NUEVA GRANADA origin: AS266848 mnt-by: MAINT-AS19429 changed: backbonedatos [at] etb.com.co 20181102 #19:59:15Z source: RADB last-modified: 2023-11-13T15:55:01Z rpki-ov-state: valid route: 45.238.197.0/24 origin: AS266848 descr: Cliente ETB: UNIVERSIDAD MILITAR NUEVA GRANADA mnt-by: MAINT-AS19429 changed: backbonedatos [at] etb.com.co 20190411 #20:10:17Z source: RADB last-modified: 2023-11-13T15:56:03Z rpki-ov-state: valid route6: 2801:12:f000::/48 origin: AS266848 descr: CLIENTE ETB: Universidad Militar mnt-by: MAINT-AS19429 changed: backbonedatos [at] etb.com.co 20230213 #18:31:58Z source: RADB last-modified: 2023-11-13T16:14:56Z rpki-ov-state: valid