These entries are queried from radb.net using whois, you can try my project getting these.
:AS52753 route: 170.81.172.0/22 descr: ITXA-SUMICITY origin: AS52753 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20161214 #20:37:34Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.81.172.0/24 descr: Brasilnet origin: AS52753 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170302 #22:23:17Z source: RADB last-modified: 2023-11-13T15:50:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.81.173.0/24 descr: Brasilnet origin: AS52753 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20170302 #22:23:17Z source: RADB last-modified: 2023-11-13T15:50:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.155.176.0/20 descr: ITX-TELECOM origin: AS52753 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20160413 #21:46:18Z source: RADB last-modified: 2023-11-13T15:49:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3780::/32 origin: AS52753 descr: FORTE-CUSTOMER mnt-by: MAINT-AS263009 changed: douglas [at] fortetelecom.com.br 20190606 #13:48:19Z source: RADB last-modified: 2023-11-13T15:56:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source