These entries are queried from radb.net using whois, you can try my project getting these.
:AS819 route: 129.100.0.0/16 descr: Western University origin: AS819 mnt-by: MAINT-AS819 changed: support [at] largnet.ca 20130830 #15:06:08Z source: RADB last-modified: 2023-11-13T15:45:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 129.100.192.0/18 descr: Proxy for Allstream Customer origin: AS819 remarks: Automated Proxy Route Entry mnt-by: MAINT-AS15290 changed: ali.zerik [at] mtsallstream.com 20131216 source: RADB last-modified: 2023-11-13T16:00:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 142.89.0.0/16 descr: St. Joseph's Hospital London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #18:51:55(UTC) 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: 142.158.0.0/16 descr: London Health Sciences Centre origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:07:39(UTC) 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: 192.139.219.0/24 descr: Fanshawe College London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #18:57:18(UTC) 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: 192.139.219.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.139.220.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.139.220.0/24 descr: Fanshawe College London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #18:59:31(UTC) 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: 198.20.32.0/19 descr: LARG*net origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:15:26(UTC) changed: rsharpe [at] largnet.on.ca 20060616 #14:43:40(UTC) 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: 198.20.32.0/24 descr: LARG*net Prefix: Thames Valley District School Board origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.20.36.0/22 descr: Roberts Research Institute - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.20.40.0/22 descr: Roberts Research Institute - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.20.44.0/23 descr: NRC IMTI - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.20.61.0/24 descr: LARG*net Prefix origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.18.0/23 descr: Fanshawe College London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:05:19(UTC) 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: 198.96.18.0/23 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.18.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.19.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.80.0/22 descr: London Public Library origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:11:41(UTC) 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: 198.96.80.0/24 origin: AS819 descr: London Public Library 198.96.80.0/24 notify: noc [at] largnet.ca mnt-by: MAINT-AS819 changed: noc [at] largnet.ca 20200615 #18:25:33Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.81.0/24 origin: AS819 descr: London Public Library 198.96.81.0/24 notify: noc [at] largnet.ca mnt-by: MAINT-AS819 changed: noc [at] largnet.ca 20200616 #14:17:01Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.82.0/24 origin: AS819 descr: London Public Library 198.96.82.0/24 notify: noc [at] largnet.ca mnt-by: MAINT-AS819 changed: noc [at] largnet.ca 20200616 #14:17:45Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.96.83.0/24 origin: AS819 descr: London Public Library 198.96.83.0/24 notify: noc [at] largnet.ca mnt-by: MAINT-AS819 changed: noc [at] largnet.ca 20200616 #14:18:30Z source: RADB last-modified: 2023-11-13T16:00:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.71.2.0/24 descr: LARG*net origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:13:31(UTC) 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: 199.164.255.0/24 descr: London Hydro, London, Ontario, Canada origin: AS819 mnt-by: MAINT-AS819 changed: support [at] largnet.ca 20130927 #18:44:34Z source: RADB last-modified: 2023-11-13T15:45:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.225.163.0/24 descr: City of London origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:10:19(UTC) 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: 205.189.1.0/24 descr: Western University origin: AS819 mnt-by: MAINT-AS819 changed: support [at] largnet.ca 20161003 #14:15:44Z source: RADB last-modified: 2023-11-13T15:49:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.189.205.0/24 descr: Woodstock Hospital origin: AS819 notify: noc [at] largnet.ca mnt-by: MAINT-AS819 changed: support [at] largnet.ca 20160602 #16:43:03Z source: RADB last-modified: 2023-11-13T15:49:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.140.0/22 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.140.0/22 descr: Fanshawe College London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:01:24(UTC) 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: 205.211.140.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.141.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.142.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.143.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.144.0/23 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.144.0/23 descr: Fanshawe College London, Ontario, Canada origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:03:01(UTC) 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: 205.211.144.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.211.145.0/24 descr: Fanshawe College - Origninate from AS819 origin: AS819 notify: shahid.ajaz [at] orano.on.ca mnt-by: ORANO-MNT changed: unread [at] ripe.net 20000101 source: CANARIE rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.130.84.0/24 descr: St. Thomas-Elgin General Hospital origin: AS819 notify: noc [at] largnet.on.ca mnt-by: MAINT-AS819 changed: bcartwright [at] largnet.on.ca 20030822 #19:17:23(UTC) 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: 2605:500::/32 descr: Western University origin: AS819 mnt-by: MAINT-AS819 changed: support [at] largnet.ca 20141017 #15:46:33Z source: RADB last-modified: 2023-11-13T15:46:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:c700::/32 descr: Largnet origin: AS819 mnt-by: MAINT-AS819 changed: noc [at] largnet.ca 20120517 #04:45:34Z source: RADB last-modified: 2023-11-13T15:42:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source