These entries are queried from radb.net using whois, you can try my project getting these.
:AS270949 route: 143.137.36.0/22 origin: AS270949 descr: CUSTOMER - SAMM - VELLO mnt-by: MAINT-AS52551 changed: cgr.samm [at] grupoccr.com.br 20201019 #17:49:28Z source: RADB last-modified: 2023-11-13T16:02:40Z rpki-ov-state: valid route6: 2804:73f8::/32 origin: AS270949 descr: CUSTOMER - SAMM - VELLO mnt-by: MAINT-AS52551 changed: cgr.samm [at] grupoccr.com.br 20201019 #17:50:17Z source: RADB last-modified: 2023-11-13T16:02:40Z rpki-ov-state: valid