These entries are queried from radb.net using whois, you can try my project getting these.
:AS88 route: 66.180.176.0/20 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-02T09:17:24Z last-modified: 2021-09-16T15:47:34Z source: ARIN rpki-ov-state: valid route: 66.180.176.0/20 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 66.180.190.0/23 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US remarks: OIT reference ServiceNow ticket REQ0166317. admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-02T09:18:31Z last-modified: 2021-09-16T15:48:45Z source: ARIN rpki-ov-state: valid route: 66.180.190.0/23 origin: AS88 descr: Princeton University remarks: OIT reference ServiceNow ticket REQ0166317 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20200612 #14:14:02Z source: RADB last-modified: 2023-11-13T16:00:58Z rpki-ov-state: valid route: 66.180.190.0/24 origin: AS88 descr: Princeton University remarks: OIT reference ServiceNow ticket REQ0329858 mnt-by: MAINT-AS88 changed: netipam [at] princeton.edu 20221019 #14:38:32Z source: RADB last-modified: 2023-11-13T16:12:46Z rpki-ov-state: valid route: 66.180.190.0/24 origin: AS88 descr: OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton NJ 08540 United States remarks: OIT reference ServiceNow ticket REQ0329858 admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2022-10-19T14:30:55Z last-modified: 2022-10-19T14:30:55Z source: ARIN rpki-ov-state: valid route: 66.180.191.0/24 origin: AS88 descr: OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton NJ 08540 United States remarks: OIT reference ServiceNow ticket REQ0329858 admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2022-10-19T14:33:25Z last-modified: 2022-10-19T14:33:25Z source: ARIN rpki-ov-state: valid route: 66.180.191.0/24 origin: AS88 descr: Princeton University remarks: OIT reference ServiceNow ticket REQ0329858 mnt-by: MAINT-AS88 changed: netipam [at] princeton.edu 20221019 #14:42:02Z source: RADB last-modified: 2023-11-13T16:12:46Z rpki-ov-state: valid route: 128.112.0.0/16 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:10:22Z last-modified: 2021-09-16T15:49:35Z source: ARIN rpki-ov-state: valid route: 128.112.0.0/16 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 128.112.2.0/23 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:11:14Z last-modified: 2021-09-16T15:49:58Z source: ARIN rpki-ov-state: valid route: 128.112.2.0/23 descr: Princeton University origin: AS88 mnt-by: MAINT-AS27506 changed: dmccoon [at] lightower.com 20181011 source: RADB last-modified: 2023-11-13T15:54:58Z rpki-ov-state: valid route: 128.112.228.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:56:46Z last-modified: 2021-09-16T15:50:10Z source: ARIN rpki-ov-state: valid route: 128.112.228.0/24 origin: AS88 descr: Princeton University mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20200713 #14:46:54Z source: RADB last-modified: 2023-11-13T16:01:12Z rpki-ov-state: valid route: 140.180.0.0/16 origin: AS88 descr: OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:12:40Z last-modified: 2021-09-16T15:50:27Z source: ARIN rpki-ov-state: valid route: 140.180.0.0/16 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 192.12.53.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:19:04Z last-modified: 2021-09-16T15:50:57Z source: ARIN rpki-ov-state: valid route: 192.12.53.0/24 descr: Princeton University origin: AS88 mnt-by: MAINT-AS27506 changed: aday [at] lightower.com 20170622 source: RADB last-modified: 2023-11-13T15:51:14Z rpki-ov-state: valid route: 204.153.48.0/22 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:13:16Z last-modified: 2021-09-16T15:51:08Z source: ARIN rpki-ov-state: valid route: 204.153.48.0/22 origin: AS88 descr: Princeton University mnt-by: MAINT-AS88 changed: netipam [at] princeton.edu 20220616 #13:39:04Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: valid route: 204.153.48.0/24 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 204.153.48.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:13:49Z last-modified: 2021-09-16T15:51:21Z source: ARIN rpki-ov-state: valid route: 204.153.49.0/24 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 204.153.49.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:14:20Z last-modified: 2021-09-16T15:51:45Z source: ARIN rpki-ov-state: valid route: 204.153.50.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:14:50Z last-modified: 2021-09-16T15:51:58Z source: ARIN rpki-ov-state: valid route: 204.153.50.0/24 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 204.153.51.0/24 descr: Princeton University origin: AS88 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20180511 #15:11:27Z source: RADB last-modified: 2023-11-13T15:53:39Z rpki-ov-state: valid route: 204.153.51.0/24 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU-Z created: 2020-07-02T09:15:17Z last-modified: 2021-09-16T15:52:10Z source: ARIN rpki-ov-state: valid route: 205.172.164.0/22 descr: MCCARTER-Net MCCARTER Theatre 91 University Place Princeton,NJ 08540 origin: AS88 mnt-by: MAINT-NTTCOM-RA changed: boudreat [at] eng.verio.net 20070413 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.172.164.0/22 origin: AS88 descr: McCarter Theatre 91 University Place Princeton, NJ 08540 US admin-c: CHU19-ARIN tech-c: CHU19-ARIN mnt-by: MNT-MCCART-5 created: 2022-12-12T16:20:45Z last-modified: 2022-12-12T16:20:45Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.172.164.0/22 origin: AS88 descr: McCarter Theater mnt-by: MAINT-AS88 changed: netipam [at] princeton.edu 20220616 #13:40:29Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2604:4540::/32 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-02T09:20:54Z last-modified: 2021-09-16T15:43:33Z source: ARIN rpki-ov-state: valid route6: 2604:4540::/32 origin: AS88 descr: Princeton-V6 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20190402 #17:44:42Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: valid route6: 2604:4540::/48 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US remarks: OIT reference ServiceNow ticket REQ0166317. admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-02T09:21:32Z last-modified: 2021-09-16T15:46:42Z source: ARIN rpki-ov-state: valid route6: 2604:4540::/48 origin: AS88 descr: PU-IPv6 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20200612 #13:56:09Z source: RADB last-modified: 2023-11-13T16:00:58Z rpki-ov-state: valid route6: 2604:4540:1000::/36 origin: AS88 descr: Princeton University mnt-by: MAINT-AS88 changed: netipam [at] princeton.edu 20220404 #13:32:47Z source: RADB last-modified: 2023-11-13T16:10:49Z rpki-ov-state: valid route6: 2604:4540:1000::/36 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton NJ 08540 United States admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2022-04-04T13:30:30Z last-modified: 2022-04-04T13:30:30Z source: ARIN rpki-ov-state: valid route6: 2620:c4::/48 origin: AS88 descr: PU-IPv6 mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20190402 #17:43:43Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: valid route6: 2620:c4::/48 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 US admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-02T09:19:54Z last-modified: 2021-09-16T15:46:56Z source: ARIN rpki-ov-state: valid route6: 2620:c4:0:100::/64 origin: AS88 descr: Princeton University mnt-by: MAINT-AS88 changed: jkaram [at] princeton.edu 20200713 #14:48:57Z source: RADB last-modified: 2023-11-13T16:01:12Z rpki-ov-state: valid route6: 2620:c4:0:100::/64 origin: AS88 descr: Princeton University OIT Network Switching and Routing 701 Carnegie Center, Suite 301 Princeton, NJ 08540 admin-c: CINN-ARIN tech-c: CINN-ARIN mnt-by: MNT-PRNU created: 2020-07-09T10:21:14Z last-modified: 2021-09-16T15:47:12Z source: ARIN rpki-ov-state: valid