These entries are queried from radb.net using whois, you can try my project getting these.
:AS270974 route: 177.73.220.0/22 origin: AS270974 descr: PROXY FOR OUR CUSTOMER CONE mnt-by: MAINT-AS53102 changed: diogo.moraes [at] sitel.com.br 20220413 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.73.220.0/22 origin: AS270974 descr: CUSTOMER - SAMM - SI TELECOM - W A DE BRITO TELECOMUNICACOES mnt-by: MAINT-AS52551 changed: cgr.samm [at] grupoccr.com.br 20210424 #11:10:48Z source: RADB last-modified: 2023-11-13T16:05:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7454::/32 origin: AS270974 descr: CUSTOMER - SAMM - SI TELECOM - W A DE BRITO TELECOMUNICACOES mnt-by: MAINT-AS52551 changed: cgr.samm [at] grupoccr.com.br 20210123 #07:13:11Z source: RADB last-modified: 2023-11-13T16:03:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source