These entries are queried from radb.net using whois, you can try my project getting these.
:AS398576 route: 38.46.36.0/22 origin: AS398576 descr: Route Registered for Cogent Communications Customer - Premium Choice Broadband geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230609 source: RADB last-modified: 2023-11-13T16:17:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.46.36.0/24 origin: AS398576 descr: Route Registered for Cogent Communications Customer - Premium Choice Broadband geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230609 source: RADB last-modified: 2023-11-13T16:17:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.46.37.0/24 origin: AS398576 descr: Route Registered for Cogent Communications Customer - Premium Choice Broadband geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230609 source: RADB last-modified: 2023-11-13T16:17:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.46.38.0/24 origin: AS398576 descr: Route Registered for Cogent Communications Customer - Premium Choice Broadband geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230609 source: RADB last-modified: 2023-11-13T16:17:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.46.39.0/24 origin: AS398576 descr: Route Registered for Cogent Communications Customer - Premium Choice Broadband geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230609 source: RADB last-modified: 2023-11-13T16:17:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.57.144.0/22 origin: AS398576 descr: Registered for Cogent Communications Customer- Premium Choice Broadband mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20230927 source: RADB last-modified: 2023-11-13T16:18:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.57.144.0/24 origin: AS398576 descr: Registered for Cogent Communications Customer- Premium Choice Broadband mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20231121 # 0940Z source: RADB last-modified: 2023-11-21T09:40:03Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.57.145.0/24 origin: AS398576 descr: Registered for Cogent Communications Customer- Premium Choice Broadband mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20231121 # 0941Z source: RADB last-modified: 2023-11-21T09:41:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.57.146.0/24 origin: AS398576 descr: Registered for Cogent Communications Customer- Premium Choice Broadband mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20231121 # 0942Z source: RADB last-modified: 2023-11-21T09:42:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.57.147.0/24 origin: AS398576 descr: Registered for Cogent Communications Customer- Premium Choice Broadband mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20231121 # 0943Z source: RADB last-modified: 2023-11-21T09:43:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.51.187.0/24 descr: Premium Choice Broadband origin: AS398576 mnt-by: MAINT-TVC changed: msideris [at] firstlight.net 20200928 source: ALTDB rpki-ov-state: valid route: 209.51.187.0/24 origin: AS398576 descr: NET-209-51-187-0-24-AS398576 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2022-01-20T20:22:04Z last-modified: 2022-01-20T20:22:04Z rpki-ov-state: valid route: 209.51.187.0/24 origin: AS398576 descr: PCB Portland HE Block 1 admin-c: ADMIN5335-ARIN tech-c: TECH862-ARIN notify: abreda [at] pcb-me.com mnt-by: MAINT-AS398576 changed: abreda [at] pcb-me.com 20230605 #16:58:47Z source: RADB last-modified: 2023-11-13T16:17:26Z rpki-ov-state: valid route: 216.66.28.0/24 origin: AS398576 descr: PCB Portland HE Block 2 admin-c: ADMIN5335-ARIN tech-c: TECH862-ARIN notify: abreda [at] pcb-me.com mnt-by: MAINT-AS398576 changed: abreda [at] pcb-me.com 20230605 #17:02:59Z source: RADB last-modified: 2023-11-13T16:17:26Z rpki-ov-state: valid route: 216.66.28.0/24 origin: AS398576 descr: NET-216-66-28-0-24-AS398576 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2022-01-20T20:22:23Z last-modified: 2022-01-20T20:22:23Z rpki-ov-state: valid route: 216.66.31.0/24 origin: AS398576 descr: NET-216-66-31-0-24-AS398576 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2022-01-20T20:22:05Z last-modified: 2022-01-20T20:22:05Z rpki-ov-state: valid route: 216.66.31.0/24 origin: AS398576 descr: PCB Portland HE Block 3 admin-c: ADMIN5335-ARIN tech-c: TECH862-ARIN notify: abreda [at] pcb-me.com mnt-by: MAINT-AS398576 changed: abreda [at] pcb-me.com 20230605 #17:04:48Z source: RADB last-modified: 2023-11-13T16:17:26Z rpki-ov-state: valid route: 216.66.31.0/24 descr: Premium Choice Broadband origin: AS398576 mnt-by: MAINT-TVC changed: msideris [at] firstlight.net 20200928 source: ALTDB rpki-ov-state: valid route: 216.66.44.0/23 origin: AS398576 descr: PCB Portland HE Block 4 admin-c: ADMIN5335-ARIN tech-c: TECH862-ARIN notify: abreda [at] pcb-me.com mnt-by: MAINT-AS398576 changed: abreda [at] pcb-me.com 20230605 #17:05:44Z source: RADB last-modified: 2023-11-13T16:17:26Z rpki-ov-state: valid route: 216.66.44.0/23 origin: AS398576 descr: NET-216-66-44-0-23-AS398576 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2022-10-29T01:45:14Z last-modified: 2022-10-29T01:45:14Z rpki-ov-state: valid