These entries are queried from radb.net using whois, you can try my project getting these.
:AS11647 route: 64.7.128.0/19 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Our big netblock. Okay, it's not huge. notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020509 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.7.128.0/20 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: First half of 64.7.128.0/19. Kept remarks: because we still advertise it. notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.7.140.0/23 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.7.140.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.7.144.0/20 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Second half of 64.7.128.0/19. notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.43.128.0/20 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: not at this time notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040317 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 98.159.240.0/20 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: netblock for 2010 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20100329 source: RADB last-modified: 2023-11-13T15:40:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.139.233.0/24 descr: Sentex Communications, Maplesoft block admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Maplesoft is no longer routed anywhere. remarks: NET-MAPLE-NET notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.73.181.0/24 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For toy.com notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040203 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.73.240.0/24 descr: NETBLK-EXCELSIOR admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Sentex Communications customer notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20060601 source: RADB last-modified: 2023-11-13T15:39:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.235.180.0/22 descr: Sentex Communications, Comdev Intl Netblock admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Comdev Aggregate previous ISP (hookup), now out of business notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.71.182.0/23 descr: Sentex Communications, Waterloo Maplesoft admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Maplesoft is not currently routed anywhere. remarks: NETBLK-WMSI-NET notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020613 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.71.182.0/24 descr: Sentex Communications, Waterloo Maplesoft admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Lower half of 199.71.182.0/23 mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020613 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.71.252.0/24 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For toy.com notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040203 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.85.118.0/23 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For toy.comtoy.com> notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040203 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.85.118.0/24 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For toy.com toy.com> notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040203 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.212.92.0/23 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20030107 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.212.134.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020614 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.212.135.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020612 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.246.7.0/24 descr: JCST-NET origin: AS11647 remarks: NET-JCST-NET remarks: hello-to-those-whacky-route-reg-guys-at-level3 remarks: we love your comments in radb objects mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20020617 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.246.36.0/23 descr: Sentex Communications, Franklin Covey admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Not currently routed anywhere. remarks: NETBLK-FQUEST-ON-CA mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020613 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.246.36.0/24 descr: Franklin Covey Canada Ltd. origin: AS11647 remarks: Franklin Covey Canada Ltd. mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20000503 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.246.37.0/24 descr: Sentex Communications, Franklin Covey admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Upper half of the Franklin Covey /23. mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020614 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.138.108.0/24 descr: Galaxy Vista, Inc. (via Sentex Communications Corporation) origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For Jim Cassidy galaxyvista.com> notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20040315 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.152.96.0/23 descr: MAUSWERKS-A-NET-MAUSWERKS-B-NET origin: AS11647 remarks: LOA on file http://www.sentex.net/routereg/204.152.96.0.jpg mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20050214 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.152.96.0/24 descr: MAUSWERKS-A-NET origin: AS11647 remarks: LOA on file http://www.sentex.net/routereg/204.152.96.0.jpg remarks: MD5 (204.152.96.0.jpg) = 5863de14c8f136fd72af5bd430419841 mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20050214 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.152.97.0/24 descr: MAUSWERKS-B origin: AS11647 remarks: LOA on file http://www.sentex.net/routereg/204.152.97.0.jpg mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20050214 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.225.48.0/24 descr: Sentex Communications, for Naviss InfoTech Services. admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: NET-NAVISS-CA mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20001215 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.225.138.0/24 descr: Sentex Communications Corporation origin: AS11647 admin-c: MT1960-ARIN tech-c: MT1960-ARIN remarks: For CompuSense notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20031210 source: RADB last-modified: 2023-11-13T15:39:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.210.141.0/24 descr: Sentex - Junior Mines origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 19990907 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.210.248.0/24 descr: Sentex Communications Corporation, OnLine Data admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: NET-ONLINE-DATA mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020614 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.164.0/23 descr: Sentex Communications Corporation, CANet block admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: ummm.. The CANet block belonging to Sentex. Yeah. notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020613 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.164.0/24 descr: NETBLK-SENTEX-NET admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Sentex Communications notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020614 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.165.0/24 descr: Sentex Communications Corporation, CANet block admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: This is the lower half of the corresponding /23. notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020613 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.51.23.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20020614 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.51.24.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: For HyperCuber notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20030601 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.51.25.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: For Delta Centre notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20030529 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.130.75.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 remarks: Connecttech notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.net 20030529 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.130.87.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: damian [at] sentex.net 20030321 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.130.91.0/24 descr: Sentex Communications Corporation admin-c: MT1960-ARIN tech-c: MT1960-ARIN origin: AS11647 notify: routereg [at] sentex.net mnt-by: MAINT-AS11647 changed: mike [at] sentex.ca 20030321 source: RADB last-modified: 2023-11-13T15:39:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2607:f3e0::/32 descr: Sentex IPV6 network prefix origin: AS11647 mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20160817 source: RADB last-modified: 2023-11-13T15:49:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:13::/48 descr: Sentex customer IPV6 network prefix origin: AS11647 mnt-by: MAINT-AS11647 changed: routereg [at] sentex.net 20160818 source: RADB last-modified: 2023-11-13T15:49:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source