These entries are queried from radb.net using whois, you can try my project getting these.
:AS21513 route: 38.103.137.0/24 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:40:46Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.174.0/24 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:41:09Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.176.0/23 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:41:38Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.179.0/24 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:42:03Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.249.0/24 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:42:32Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.250.0/23 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:42:54Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.252.0/24 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:43:11Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.244.254.0/23 descr: Spectrum Networks Customer Route email noc [at] spectrumnet.us for removal origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090105 #16:43:30Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.214.240.0/20 origin: AS21513 descr: 80 Bloor Street West Suite 503 Toronto ON M4W 1J2 Canada member-of: RS-EPIK1 admin-c: BEANF1-ARIN tech-c: BEANF1-ARIN mnt-by: MNT-BNFD created: 2022-11-11T03:15:26Z last-modified: 2023-09-05T17:35:37Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.81.48.0/20 origin: AS21513 descr: 77 Mowat Ave. #506 Toronto ON M6K-3E3 Canada admin-c: BEANF1-ARIN tech-c: BEANF1-ARIN mnt-by: MNT-BNFD created: 2023-09-13T17:21:09Z last-modified: 2023-09-13T17:21:09Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.81.48.0/20 descr: Peer1 Route Object origin: AS21513 mnt-by: maint-as13768 changed: sbellerive [at] peer1.com 20080711 source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.81.58.0/23 descr: Spectrum Networks Proxy Registration origin: AS21513 mnt-by: MAINT-AS11404 changed: john [at] vanoppen.com 20090319 #16:00:51Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2607:f3d8::/32 origin: AS21513 descr: 80 Bloor Street West Suite 503 Toronto ON M4W 1J2 Canada member-of: RS-EPIK1 admin-c: BEANF1-ARIN tech-c: BEANF1-ARIN mnt-by: MNT-BNFD created: 2022-11-11T03:22:39Z last-modified: 2023-09-05T17:35:36Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source