These entries are queried from radb.net using whois, you can try my project getting these.
:AS398497 route: 23.132.128.0/24 origin: AS398497 descr: Riviera Utilities mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20200825 #20:44:39Z source: RADB last-modified: 2023-11-13T16:01:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.34.128.0/19 origin: AS398497 descr: RIVIERA-UTILITIES, US mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20221107 #18:55:35Z source: RADB last-modified: 2023-11-13T16:13:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.35.160.0/19 origin: AS398497 descr: Riviera Utilities mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20201228 #17:14:17Z source: RADB last-modified: 2023-11-13T16:03:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.127.16.0/23 origin: AS398497 descr: Cogent block assigned to Riviera Utilities AS398497 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20200817 #16:24:11Z source: RADB last-modified: 2023-11-13T16:01:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source