These entries are queried from radb.net using whois, you can try my project getting these.
:AS3999 route: 66.71.0.0/17 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190215 #20:32:43Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 75.102.64.0/18 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #13:57:11Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 104.38.0.0/15 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:03:55Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 128.118.0.0/16 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #13:57:50Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 130.203.0.0/16 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #13:58:32Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 146.186.0.0/16 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #13:59:40Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 150.231.0.0/16 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:00:58Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.5.157.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20231025 #17:39:17Z source: RADB last-modified: 2023-11-13T16:19:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.5.158.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:01:36Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.5.159.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:02:17Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.5.160.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:02:48Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.5.161.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190217 #14:03:22Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.112.253.0/24 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190516 #18:21:31Z source: RADB last-modified: 2023-11-13T15:56:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2610:8::/32 origin: AS3999 descr: The Pennsylvania State University University Park, PA 16802 mnt-by: MAINT-AS3999 changed: jpp11 [at] psu.edu 20190219 #13:41:22Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source