These entries are queried from radb.net using whois, you can try my project getting these.
:AS46476 route: 66.230.0.0/18 origin: AS46476 descr: Texas Tech University Health Sciences Center 3601 4th Street Lubbock TX 79430 United States TTUHSC-V4-BLK1 admin-c: ITNET1-ARIN tech-c: ITNET1-ARIN mnt-by: MNT-TTUHS created: 2021-02-09T19:54:37Z last-modified: 2021-02-09T19:54:37Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.230.0.0/18 descr: Texas Tech University Health Sciences Center Information Technology: Technology Services 3601 - 4th Street Lubbock, TX 79430 origin: AS46476 notify: it.networking [at] ttuhsc.edu mnt-by: MAINT-AS46476 changed: everett.mcarthur [at] ttuhsc.edu 20081001 #19:14:30Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.175.128.0/17 origin: AS46476 descr: Texas Tech University Health Sciences Center 3601 4th Street Lubbock TX 79430 United States TTUHSC-V4-BLK3 admin-c: ITNET1-ARIN tech-c: ITNET1-ARIN mnt-by: MNT-TTUHS created: 2021-02-09T19:52:57Z last-modified: 2021-02-09T19:52:57Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.175.128.0/17 descr: Texas Tech University Health Sciences Center Information Technology: Technology Services 3601 - 4th Street Lubbock, TX 79430 origin: AS46476 mnt-by: MAINT-AS46476 changed: everett.mcarthur [at] ttuhsc.edu 20090701 #19:39:25Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 99.171.192.0/19 descr: Texas Tech University Health Sciences Center Information Technology: Technology Services 3601 - 4th Street Lubbock, TX 79430 origin: AS46476 mnt-by: MAINT-AS46476 changed: everett.mcarthur [at] ttuhsc.edu 20090701 #19:40:07Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.122.128.0/18 origin: AS46476 descr: Texas Tech University Health Sciences Center 3601 4th Street Lubbock TX 79430 United States TTUHSC-V4-BLK2 admin-c: ITNET1-ARIN tech-c: ITNET1-ARIN mnt-by: MNT-TTUHS created: 2021-02-09T19:56:31Z last-modified: 2021-02-09T19:56:31Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.122.128.0/18 descr: Texas Tech University Health Sciences Center Information Technology: Technology Services 3601 - 4th Street Lubbock, TX 79430 origin: AS46476 notify: it.networking [at] ttuhsc.edu mnt-by: MAINT-AS46476 changed: everett.mcarthur [at] ttuhsc.edu 20081001 #19:16:32Z source: RADB last-modified: 2023-11-13T15:41:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:80::/48 descr: Texas Tech University Health Sciences Center Information Technology: Technology Services 3601 - 4th Street Lubbock, TX 79430 origin: AS46476 mnt-by: MAINT-AS46476 changed: kelly.hays [at] ttuhsc.edu 20120508 #23:22:39Z source: RADB last-modified: 2023-11-13T15:42:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:118:3000::/40 descr: Texas Tech Health Science Center origin: AS46476 mnt-by: MAINT-AS16905 changed: byron.hicks [at] tx-learn.net 20170929 #21:26:30Z source: RADB last-modified: 2023-11-13T15:51:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:118:3000::/40 origin: AS46476 descr: Texas Tech University Health Sciences Center 3601 4th Street Lubbock TX 79430 United States TTUHSC-V6-BLK1 admin-c: ITNET1-ARIN tech-c: ITNET1-ARIN mnt-by: MNT-TTUHS created: 2021-02-09T19:58:17Z last-modified: 2021-02-09T19:58:17Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source