These entries are queried from radb.net using whois, you can try my project getting these.
:AS399919 route: 192.52.255.0/24 origin: AS399919 descr: Alomere Health 111 17TH AVENUE EAST ALEXANDRIA MN 56308 United States admin-c: ANT10-ARIN tech-c: ANT10-ARIN mnt-by: MNT-AH-1581 created: 2021-12-13T18:32:28Z last-modified: 2021-12-13T18:32:28Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.52.255.0/24 descr: CHTR-Douglas County Hospital dba Alomere Health-Central origin: AS399919 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: PublicIPAdressing [at] charter.com 20211123 source: RADB last-modified: 2023-11-13T16:11:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source