These entries are queried from radb.net using whois, you can try my project getting these.
:AS15221 route: 66.113.0.0/19 descr: AS15221 proxy-registered route by Cogent origin: AS15221 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 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: 66.113.0.0/19 descr: FBB-cust/Prefix Add origin: AS15221 mnt-by: D102-MNT changed: ipadmin [at] data102.com 20071114 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 134.17.0.0/16 descr: Data102/Falcon/Vanion origin: AS15221 remarks: contact peering [at] icgcomm.com mnt-by: MAINT-AS2551 changed: ingrid_erkman [at] icgcomm.com 20060905 #22:42:42(UTC) source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.198.32.0/22 origin: AS15221 descr: VPN Solutions, Inc mnt-by: MAINT-LARUS changed: t.t.xu [at] laruscloudservice.net 20231002 source: RADB last-modified: 2023-11-13T16:18:46Z rpki-ov-state: valid route: 154.198.32.0/22 descr: VPN Solutions, Inc origin: AS15221 mnt-by: LARUS-SERVICE-MNT changed: *** [at] cloudinnovation.org 20231002 source: AFRINIC rpki-ov-state: valid route: 192.65.171.0/24 descr: AS15221 proxy-registered route by Cogent origin: AS15221 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 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: 192.133.104.0/24 descr: D102-COS-STRATUS-GARBEE2 origin: AS15221 mnt-by: D102-MNT changed: ipadmin [at] data102.com 20210716 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.233.92.0/24 descr: AS15221 proxy-registered route by Cogent origin: AS15221 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 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: 209.248.64.0/18 descr: AS15221 proxy-registered route by Cogent origin: AS15221 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20031230 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: 209.248.64.0/18 descr: TKT425699/Prefix Add origin: AS15221 mnt-by: D102-MNT changed: antwan.hernandez [at] level3.com 20070913 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:90c0::/32 descr: D102-SIQ-v6-1 origin: AS15221 mnt-by: D102-MNT changed: ipadmin [at] data102.com 20200715 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source