These entries are queried from radb.net using whois, you can try my project getting these.
:AS15157 route: 199.3.108.0/23 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:33:46Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.3.108.0/24 descr: SDN Communications on behalf of Northwestern Corporation origin: AS15157 mnt-by: MAINT-AS13576 changed: chris.schuette [at] sdncommunications.com 20141028 source: RADB last-modified: 2023-11-13T15:46:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.3.109.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:36:20Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.16.0/21 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:33:31Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.16.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:36:11Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.17.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:36:06Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.18.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:36:01Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.19.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:35:57Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.20.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:35:52Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.21.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:37:46Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.22.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:37:52Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.23.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:37:57Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.24.0/22 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:33:14Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.24.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:38:01Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.25.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:38:06Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.26.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:38:11Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.27.0/24 origin: AS15157 descr: SDN Communications on behalf of Northwestern Energy Corp mnt-by: MAINT-AS13576 changed: gary.glissendorf [at] sdncommunications.com 20231031 #21:38:16Z source: RADB last-modified: 2023-11-13T16:19:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.107.235.0/24 descr: CHTR-NORTHWESTERN ENERGY-Northwest origin: AS15157 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: PublicIPAdressing [at] charter.com source: RADB last-modified: 2024-01-16T17:33:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source