These entries are queried from radb.net using whois, you can try my project getting these.
:AS21755 route: 64.112.180.0/22 descr: netBlazr origin: AS21755 mnt-by: MAINT-AS27506 changed: probillard [at] lightower.com 20170316 source: RADB last-modified: 2023-11-13T15:50:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.249.140.0/24 descr: RCN-Cust-Circles origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20100708 #22:00:31Z 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: 67.208.165.0/24 descr: Sidera-Boston-ReAlloc origin: AS21755 mnt-by: MAINT-AS27506 changed: ronald.wilson [at] sidera.net 20130219 #15:17:23Z source: RADB last-modified: 2023-11-13T15:45:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.208.166.0/23 descr: Sidera Networks - Boston Market Allocation origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20110126 #13:36:52Z 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: 67.208.168.0/23 descr: Sidera - Boston origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20110302 #22:22:03Z 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: 67.208.176.0/20 descr: RCN Business Solutions Boston Prefix origin: AS21755 admin-c: YFH-ARIN tech-c: YFH-ARIN mnt-by: MAINT-AS27506 changed: bgp [at] electricfiber.net 20071003 #18:32:13(UTC) 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: 67.208.189.0/24 descr: Lightower/Sidera origin: AS21755 mnt-by: MAINT-AS27506 changed: rdavis [at] lightower.com 20160615 source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.205.0/24 descr: Sidera-Boston origin: AS21755 mnt-by: MAINT-AS27506 changed: ronald.wilson [at] sidera.net 20130626 #17:31:17Z source: RADB last-modified: 2023-11-13T15:45:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.216.0/24 descr: Sidera-Boston origin: AS21755 mnt-by: MAINT-AS27506 changed: ronald.wilson [at] sidera.net 20130626 #17:26:49Z source: RADB last-modified: 2023-11-13T15:45:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.221.0/24 descr: Sidera-Boston origin: AS21755 mnt-by: MAINT-AS27506 changed: ronald.wilson [at] sidera.net 20130626 #17:28:56Z source: RADB last-modified: 2023-11-13T15:45:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.117.2.0/23 descr: Lightower-customer origin: AS21755 mnt-by: MAINT-AS27506 changed: dataoperations [at] sidera.net 20130514 #18:24:17Z source: RADB last-modified: 2023-11-13T15:45:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 184.75.192.0/22 descr: Sidera Networks Boston origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20110328 #20:47:35Z 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: 198.144.101.0/24 descr: LIGHTOWER-CSR-SOPHOS origin: AS21755 mnt-by: MAINT-AS27506 changed: ronald.wilson [at] sidera.net 20131002 #21:15:46Z 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: 198.147.175.0/24 descr: RCNMetro-CUST-WGBH origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20100708 #22:16:54Z 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: 204.152.12.0/23 descr: RCNMetro-CUST-WGBH Educational Foundation 1 Guest Street Boston, MA 01235 US origin: AS21755 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20100708 #22:20:13Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source