These entries are queried from radb.net using whois, you can try my project getting these.
:AS3756 route: 192.52.180.0/24 origin: AS3756 descr: NYSERNet test network admin-c: ZN56-ARIN tech-c: ZN56-ARIN mnt-by: MNT-NYSR-Z created: 2022-09-02T14:34:37Z last-modified: 2022-09-02T14:34:37Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.109.16.0/21 origin: AS3756 descr: NYSERNet Syracuse admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20190815 #18:32:27Z source: RADB last-modified: 2023-11-13T15:57:04Z rpki-ov-state: valid route: 199.109.16.0/22 origin: AS3756 descr: NYSERNet Syracuse admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20190705 #20:14:50Z source: RADB last-modified: 2023-11-13T15:56:42Z rpki-ov-state: valid route: 199.109.16.0/23 origin: AS3756 descr: NYSERNet Syracuse admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20220302 #18:40:10Z source: RADB last-modified: 2023-11-13T16:09:25Z rpki-ov-state: valid route: 199.109.18.0/23 origin: AS3756 descr: NYSERNet Syracuse admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20220302 #18:55:14Z source: RADB last-modified: 2023-11-13T16:09:25Z rpki-ov-state: valid route: 199.109.19.0/24 origin: AS3756 descr: NYSERNet NYC admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20190705 #20:13:16Z source: RADB last-modified: 2023-11-13T15:56:42Z rpki-ov-state: valid route: 199.109.32.0/22 descr: NYSERNet Syracuse origin: AS3756 admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: noc [at] nysernet.org 20080116 #14:35:44(UTC) source: RADB last-modified: 2023-11-13T15:39:54Z rpki-ov-state: valid route6: 2620:f:1::/48 descr: NYSERNet Syracuse Office origin: AS3756 admin-c: William Owens tech-c: NYSERNet NOC notify: noc [at] nysernet.org mnt-by: MAINT-AS3754 changed: owens [at] nysernet.org 20120215 #16:51:59Z source: RADB last-modified: 2023-11-13T15:42:03Z rpki-ov-state: valid