These entries are queried from radb.net using whois, you can try my project getting these.
:AS3603 route: 157.253.0.0/16 descr: LACNIC generated route for University de Los Andes origin: AS3603 remarks: LACNIC generated route for University de Los Andes remarks: maxLength 24 mnt-by: MNT-CO-ULAN5-LACNIC changed: 20240308 source: LACNIC remarks: *************************************************** remarks: This object may have been modified remarks: For more information, please query whois.lacnic.net remarks: *************************************************** last-modified: 2024-03-08T15:00:05Z rpki-ov-state: valid route: 157.253.0.0/16 origin: AS3603 descr: Clientes ETB: UNIANDES mnt-by: MAINT-AS19429 changed: backbonedatos [at] etb.com.co 20190411 #21:23:09Z source: RADB last-modified: 2023-11-13T15:56:03Z rpki-ov-state: valid route6: 2800:2d0::/32 descr: LACNIC generated route6 for University de Los Andes origin: AS3603 remarks: LACNIC generated route6 for University de Los Andes remarks: maxLength 32 mnt-by: MNT-CO-ULAN5-LACNIC changed: 20240308 source: LACNIC remarks: *************************************************** remarks: This object may have been modified remarks: For more information, please query whois.lacnic.net remarks: *************************************************** last-modified: 2024-03-08T15:00:06Z rpki-ov-state: valid