These entries are queried from radb.net using whois, you can try my project getting these.
:AS54539 route: 199.182.64.0/21 origin: AS54539 descr: Calhoun ISD admin-c: IPADM607-ARIN tech-c: IPADM607-ARIN mnt-by: MNT-CALHOU-3 created: 2023-03-08T18:26:45Z last-modified: 2023-08-07T16:10:35Z source: ARIN rpki-ov-state: valid route: 199.182.64.0/22 origin: AS54539 descr: Calhoun ISD admin-c: IPADM607-ARIN tech-c: IPADM607-ARIN mnt-by: MNT-CALHOU-3 created: 2023-08-04T22:31:48Z last-modified: 2023-08-07T16:10:35Z source: ARIN rpki-ov-state: valid route: 199.182.68.0/22 origin: AS54539 descr: Calhoun ISD admin-c: IPADM607-ARIN tech-c: IPADM607-ARIN mnt-by: MNT-CALHOU-3 created: 2023-08-04T22:32:26Z last-modified: 2023-08-07T16:10:35Z source: ARIN rpki-ov-state: valid