These entries are queried from radb.net using whois, you can try my project getting these.
:AS21730 route: 65.61.64.0/19 origin: AS21730 descr: Halstad Telephone Company 345 2nd Ave W Halstad MN 56548 United States admin-c: BMI146-ARIN tech-c: BMI146-ARIN mnt-by: MNT-HALSTA created: 2022-04-04T20:35:44Z last-modified: 2022-04-04T20:35:44Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.199.224.0/21 origin: AS21730 descr: Halstad Telephone Company 345 2nd Ave W Halstad MN 56548 United States admin-c: BMI146-ARIN tech-c: BMI146-ARIN mnt-by: MNT-HALSTA created: 2022-04-04T20:44:41Z last-modified: 2022-04-04T20:44:41Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.73.192.0/21 origin: AS21730 descr: Halstad Telephone Company 345 2nd Ave W Halstad MN 56548 United States admin-c: BMI146-ARIN tech-c: BMI146-ARIN mnt-by: MNT-HALSTA created: 2022-04-04T20:45:16Z last-modified: 2022-04-04T20:45:16Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source