These entries are queried from radb.net using whois, you can try my project getting these.
:AS26623 route: 131.108.208.0/23 origin: AS26623 descr: ITX-CUSTOMER-ENTEL mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20211019 #19:30:00 source: RADB last-modified: 2023-11-13T16:08:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 131.108.210.0/23 descr: Ingenier=C3=ADa e Inform=C3=A1tica Asociada Ltda CUSTOMERS origin: AS26623 mnt-by: MNT-CL-IILT2-LACNIC changed: amunizaga [at] gmail.com 20221115 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 131.108.210.0/23 origin: AS26623 descr: ITX-GTD-CUSTOMERS mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20200803 #21:56:08Z source: RADB last-modified: 2023-11-13T16:01:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source