These entries are queried from radb.net using whois, you can try my project getting these.
:AS62752 route: 198.51.75.0/24 origin: AS62752 descr: Pegboard Hosting member-of: AS62752:RS-PEGBOARD-ORIGIN admin-c: ARINM4-ARIN tech-c: ARINM4-ARIN mnt-by: MNT-PH-285 created: 2022-04-11T14:30:24Z last-modified: 2024-04-08T15:21:19Z source: ARIN rpki-ov-state: valid