These entries are queried from radb.net using whois, you can try my project getting these.
:AS399386 route: 199.88.131.0/24 origin: AS399386 descr: Laramie County Government 310 W. 19th St. Suite 410 CHEYENNE WY 82001 United States admin-c: ALEXA502-ARIN tech-c: MOORE1844-ARIN mnt-by: MNT-LCG-65 created: 2021-04-07T18:57:27Z last-modified: 2021-04-07T18:57:27Z source: ARIN rpki-ov-state: valid route6: 2001:470:260::/48 origin: AS399386 descr: NET-2001-470-260---48-AS399386 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2023-12-29T02:45:13Z last-modified: 2023-12-29T02:45:13Z rpki-ov-state: valid