These entries are queried from radb.net using whois, you can try my project getting these.
:AS29966 route: 64.6.66.0/24 origin: AS29966 descr: Verisign Route mnt-by: MAINT-AS26415 changed: radb [at] verisign.com 20221117 source: radb remarks: For non critical questions, contact radb [at] verisign.com. remarks: For operational issues, contact Verisign at remarks: https://www.verisign.com/en_US/company-information/contact-us/index.xhtml last-modified: 2023-11-13T16:19:05Z rpki-ov-state: valid route: 64.6.66.0/24 origin: AS29966 descr: Verisign Route tech-c: NETWO480-ARIN admin-c: NETWO480-ARIN mnt-by: MNT-VGRS source: ARIN remarks: For non critical questions, contact netadmin [at] verisign.com. remarks: For operational issues, contact Verisign at remarks: https://www.verisign.com/en_US/company-information/contact-us/index.xhtml created: 2022-11-18T15:02:45Z last-modified: 2022-11-18T15:02:45Z rpki-ov-state: valid