These entries are queried from radb.net using whois, you can try my project getting these.
:AS30524 route: 20.156.186.0/24 origin: AS30524 descr: DIA/SE1000/1453 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20230325 #18:37:51Z source: RADB last-modified: 2023-11-13T16:15:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.240.0/20 origin: AS30524 descr: NEXGEN NETWORKS CORP admin-c: Network Operations tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20200309 #01:29:53Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.240.0/21 descr: Proxy route for NEXGEN by MZIMA/PACKETEXCHANGE origin: AS30524 admin-c: MZIMA-NETOPS tech-c: MZIMA-NETOPS notify: netops [at] mzima.net mnt-by: MAINT-AS3257 changed: netops [at] mzima.net 20100422 #18:30:54Z changed: netguard [at] gtt.net 20181101 source: RADB last-modified: 2023-11-13T15:55:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.246.0/23 origin: AS30524 descr: NEXGEN NETWORKS 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:31:31Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.248.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP admin-c: Network Operations tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20200315 #17:35:45Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.185.252.0/24 origin: AS30524 descr: DIA/AA500/0698 admin-c: Network Operations tech-c: Network Operations geoidx: United States mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20230313 #13:49:51Z source: RADB last-modified: 2023-11-13T16:15:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.17.126.0/24 descr: PACNET (proxy-registered route object) origin: AS30524 remarks: This route object is for a PACNET customer route which is being exported under this origin AS. + This route object was created because no existing route object with the same origin was found, and since some ANC peers filter based on these objects this route may be rejected if this object is not created. + Please contact abuse [at] pacnet.net for any related SPAM/abuse case + Please contact ip-noc [at] pacnet.net if you have any other Questions regarding this object. notify: ip-noc [at] pacnet.net mnt-by: MAINT-AS4637 changed: ip-noc [at] pacnet.net 20140310 source: RADB last-modified: 2023-11-13T15:58:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.162.250.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP / SINGAPORE admin-c: Network Operations tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20210407 #20:04:38Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 109.70.90.0/24 origin: AS30524 descr: ISP/LD1000/3030 admin-c: Network Operations tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20220418 #02:14:10Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 109.70.91.0/24 origin: AS30524 descr: FRANKFURT ROUTED CLASS C ISP/FU1000/3045 admin-c: Network Operations tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20220418 #02:15:35Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.216.0/21 origin: AS30524 descr: NEXGEN NETWORKS CORP tech-c: Network Operations notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20200311 #13:58:44Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.216.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:32:19Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.217.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:33:16Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.218.0/23 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:35:04Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.218.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:27:59Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.219.0/24 descr: Nexgen origin: AS30524 mnt-by: MAINT-AS27506 changed: bgp [at] electricfiber.com 20081006 #12:08:52Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.220.0/24 descr: proxy route by MZIMA for NEXGEN origin: AS30524 admin-c: MZIMA-NETOPS tech-c: MZIMA-NETOPS notify: netops [at] mzima.net mnt-by: MAINT-AS3257 changed: netops [at] mzima.net 20090105 #17:31:06Z changed: netguard [at] gtt.net 20181101 source: RADB last-modified: 2023-11-13T15:55:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.222.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:30:36Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.91.223.0/24 origin: AS30524 descr: NEXGEN NETWORKS CORP 111 admin-c: Network Operations tech-c: Network Operations geoidx: United States notify: helpdesk [at] nexgen-net.com mnt-by: MAINT-AS30524 changed: helpdesk [at] nexgen-net.com 20201128 #16:34:10Z source: RADB last-modified: 2023-11-13T16:12:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source