These entries are queried from radb.net using whois, you can try my project getting these.
:AS267503 route: 192.141.252.0/22 descr: ITX-INFOBARRA origin: AS267503 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20181016 #18:45:13Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.252.0/22 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.252.0/23 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.252.0/24 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.253.0/24 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.254.0/23 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.254.0/24 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.141.255.0/24 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:427c::/32 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:427c::/32 descr: ITX-INFOBARRA origin: AS267503 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20181016 #18:46:23Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:427c::/33 descr: Maxxnet origin: AS267503 notify: noc [at] maxxnet.com.br mnt-by: MAINT-AS267503 changed: noc [at] maxxnet.com.br 20211216 source: TC last-modified: 2022-08-24T00:47:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source